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产品型号SC806IMLTRT的概述

芯片SC806IMLTRT的概述 SC806IMLTRT是一款高性能的电源管理芯片，主要应用于各种电子设备中，如智能手机、平板电脑、笔记本电脑以及其他移动设备。作为一款高集成度的解决方案，SC806IMLTRT通过降低系统功耗、提高效率而广受关注。它的设计旨在满足现代电子产品对电源效率和体积的双重需求，因而在市场上获得了良好的反响。芯片SC806IMLTRT的详细参数 SC806IMLTRT的技术参数包括输入电压范围、输出电压精度、输出电流能力、功耗等。通常，这款芯片支持的输入电压范围为3V至20V，能够适应多种电动车和工业自动化应用的需要。它的输出电流可以达到1A至2A，适合各种工作条件。值得注意的是，SC806IMLTRT的待机功耗极低，这对于延长移动设备的电池寿命至关重要。此外，该芯片在温度范围内的稳定性也是一个重要参数。通常，SC806IMLTRT能在-40℃至+125℃的...

产品型号SC806IMLTRT的Datasheet PDF文件预览

SC806

Miniature High Current

Lithium-Ion Battery Charger

POWER MANAGEMENT

Description

Features

The SC806 is a fully integrated, single cell, constant-cur-

rent (cc)/constant-voltage (cv) Lithium-Ion battery charger

in a tiny 3x3 mm thermally enhanced MLP package. The

SC806 can operate as a stand-alone charger or in con-

junction with a Power Management Controller (PMIC).

Fully integrated charger with FET pass transistor,

reverse-blocking diode, sense resistor and thermal

protection

High Accuracy Charge Current*

Tiny 3mm x 3mm 10 lead MLP package

Programmable precharge, fastcharge and termina-

tion current

The SC806 has a pre-charge function for trickle charging

deeply discharged batteries. The fast charge current is

enabled automatically when the battery voltage reaches

the required threshold. When the battery reaches the

constant voltage or CV portion of the charge curve the

SC806 switches to CV regulation mode. In this mode

the output current decays until the termination current is

reached. At this point the SC806 signals the charge cycle

is complete and turns off the output and enters the moni-

tor mode. If the battery voltage drops by 100mV from

the CV voltage a new charge cycle will begin.

Battery voltage controlled to 1% accuracy

Battery Charge Current accurate to 5% at 800mA

Soft-start for step load and adapter plug-in

Up to 1A continuous charge current

Input voltage range from 3V to 6V allows seamless

charging from current limited adapter

0.1µA battery drain current in shutdown and

monitor modes

Over current protection in all charging modes

Automatic loss of battery detection

Adapter Present, Charge Status, and No Battery

output LED drivers

The SC806 can also function as a general purpose cur-

rent source or as a current source for charging Nickel-

Cadmium (NiCd) and Nickel-Metal-Hydride (NiMH) batter-

ies.

*Patent Pending

Applications

Cellular phones

PDAs

Handheld meters

Charging stations

USB chargers

Digital cameras

GPS Handhelds

Programmable current source

Typical Application Circuit

SC806 Typical Application Circuit

NTC Voltage

SC806

CHARGER VIN

VCC

VOUT

NTC

CHRGB

CPB

ITERM

NOBAT IPRGM

BATTERY

DIS

GND

.1uF

LED

3.01k

NOBAT Indicator

3.01k

Adapter

Present

Indicator

2.2uF

Charging

Indicator

August 10, 2005

www.semtech.com

SC806

POWER MANAGEMENT

Absolute Maximum Ratings

Exceeding the specifications below may result in permanent damage to the device or device malfunction. Operation outside of the parameters

specified in the Electrical Characteristics section is not implied.

Parameter

Symbol

Maximum

-0.3 to 7.0

-0.3 to +6.0

Units

VCC, CPB, CHRGB, NTC, DIS to GND

VOUT, NOBAT, IPRGM, ITERM to GND

Power Dissipation

MLP (Derate 20mW/°C above 85°C)

θ_JA

50*

°C/W

°C

Thermal Impedance, Junction to Case

Junction Temperature

Tjmax

T_A

150

Operating Ambient Temperature Range

Peak IR Reflow temperature, soldering 20s-40s

Storage Temperature Range

VOUT short to GND

-40 to +85

260

T_LEAD

T_STG

-65 to 150

Continuous

VOUT Output Current

*Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCP with thermal vias under the exposed pad per JESD51 standards.

Electrical Characteristics

Unless otherwise noted: VCC = 4.75V - 5.25V.

Parameter

Symbol

Conditions

25^oC

T_A

(-40^oC to +85°C) Units

Min

Typ Max

Min

Max

Input Voltage

VCC

3.15

6.3

Shutdown Mode

DIS = 5V

ICC_DIS

850

400

1200

µA

Operating Current

Charging Mode, CPB,

CHRGB, ITERM,

IPRGM = 0 µA

ICC_CHG

1.2

0.8

2.25

Battery Leakage Current

Regulated Voltage

Ileak_BAT

VBAT**

VCC = 0V

0.1

4.2

µA

4.16

4.24

Battery Pre-Charge Current

Battery Termination Current

IPREQ

ITERM Resistor R = 3.01k

ITERMQ

IFastQ₁

IFastQ₂

IPRGM = 15k

IPRGM = 1.87k

VBATTERY = 3.8V

100

787

91.5

-5

111.5

Battery Fast-Charge Current

Battery Fast-Charge

Current Limit

2.8V < VBATTERY < VBAT

Dropout Voltage = 1V

1.0***

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

Electrical Characteristics (Cont.)

Unless otherwise noted: VCC = 4.75V - 5.25V.

Parameter

Symbol

Conditions

25^oC

T_A

(-40^oC to +85^oC) Units

Min

Typ

1.5

2.8

2.75

Max

Min

1.4

Max

1.6

Iprog Regulated Voltage

Iterm Regulated Voltage

Vin UVLO Rising Threshold

Vin UVLO Falling Threshold

Vin UVLO Hysteresis

V_IPRGM

V_ITERM

1.4

1.6

VT_UVLOR

VT_UVLOF

VT_UVLOH

VT_OVPOR

VT_OVPOF

VT_OVPOH

VT_PREQR

VT_REQ

2.65

2.60

3.15

3.10

Vin OVP Rising Threshold

Vin OVP Falling Threshold

Vin OVP Hysteresis

6.8

6.4

400

2.8

100

6.3

5.9

150

2.7

7.5

7.15

600

2.9

Vbat Precharge Threshold

Vbat Recharge Threshold

VBAT - VBATTERY

140

No Battery Detect

Tested at Vcc=5V

NTC Thresholds

VT_NOBAT

%Vcc

DIS Threshold

VT_DIS

VCC=5V

1.0

0.4

1.25

^°C

Over Temperature Shutdown

Hysteresis = 10°C

150

Charging

Isnk=2mA

VCB_VOL

ICB_OFF

0.2

CHRGB LED output

CPB LED output

Charge Complete,

Disable or UV

off leakage

µA

Charger Present

Isnk=2mA

VCP_VOL

ICP_OFF

0.2

UV off leakage

µA

VNB_VOH

INB_OFF

NTC=VCC, Isrc=1mA

4.8

4.5

NoBat output

NTC=VCC/2 off leakage

µA

Notes:

* Tied to PCB with 1 Square Inch, 2 Ounce Copper. Tja=41°C/W using JESD 51 Standard.

** Iload=75mA. See typical performance curve for load regulation characteristics.

*** Thermally Limited.

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

Pin Configuration

Ordering Information

Device ⁽¹⁾

SC806IMLTRT⁽²⁾

SC806EVB

Package

Top View

MLP-10

CHRGB

NTC

VOUT

Evaluation Board

CPB

VCC

Note:

(1) Only available in tape and reel packaging. A reel contains

3,000 devices.

(2) Available in lead-free packaging only. This product is fully

WEEE and RoHS compliant.

NOBAT

DIS

IPRGM

ITERM

GND

MLP10: 3x3 10 Lead

Pin Descriptions

Pin #

Pin Name Pin Function

VOUT

CPB

Charger output, connect to battery.

Output status indicator for the adapter present. This output is active low when the VCC input

voltage is above the UVLO threshold.

VCC

Supply pin, connect to adaptor power.

IPRGM

Charger current limit program pin. Requires a resistor to ground to program fast-charge

current.

ITERM

Selection for current termination and pre-charge current. Requires a resistor to ground to

program pre-charge and termination current.

GND

DIS

Ground.

Device disable/enable pin. This pin is active low to enable the SC806, a high level disables

operation.

NOBAT

NTC

Output status indicator for 'No Battery' condition. Output is active high when the battery is

removed. Output is high impedance when the battery is present.

This pin is used to detect the NTC element inside the battery pack by detecting a voltage

within 95% of VCC. Connect to resistor pullup to VCC and NTC to ground. This pin only

controls the NOBAT output and does not effect the charger output.

CHRGB

Output status indicator. Active low output indicates charger is delivering current to the battery.

CHRGB output goes high impedance when the output current falls below the termination current

setting and the output is turned off. Connect cathode of the 'charging' LED this pin to indicate

charge in progress.

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

Block Diagram

VCC

Reference

Voltages

Vout Ref

Fast Charge Ref

Pre-Charge Ref

GND

CPB

Pre-Charge On

Control

Fast-Charge On

Over Temp

VOUT

NOBAT

Under Voltage

Over Voltage

DIS

NTC

Interface

IPRGM

NTC

CHRGB

Fast Charge Ref

ITERM

VOUT

Vout Ref

Pre-Charge Ref

SC806 6V Charger Block Diagram

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

General Operation

Note that for a given program resistor the current through

the battery in CV mode can be determined by replacing

1.5 with the actual voltage on the IPRGM pin in the above

equation.

The SC806 is configured based on the application for

Fast Charge and Termination current. A typical charging

cycle is described below. Details on alternate applica-

tions and output programmability are covered in the indi-

vidual sections.

Termination Current

Once the battery reaches the program voltage of 4.2V

the device will transition from a constant current source

to a constant voltage source and the current through

the battery begins to decrease while the voltage remains

constant. When the current falls below the programmed

termination current set by the termination resistor on

the ITERM pin, the SC806 will transition the CHRGB pin

from low to high. The equation to set the termination

current is given by:

The charging cycle begins when the adapter is plugged

in. The SC806 performs glitch filtering on the VCC input

and initiates a charge cycle when VCC > UVLO. At this

time, the CHRGB and CPB signals are active low turning

on the LEDs. If the battery voltage is less than 2.8V, the

SC806 will charge the output with the pre-charge cur-

rent. When the battery voltage exceeds 2.8V, the SC806

enters fast-charge or constant current (CC) mode. When

the battery voltage reaches its final value, the charger

enters the constant voltage (CV) mode. In this mode the

output voltage is held constant and the current de-

creases until the termination current level is reached.





1.5





ITERM=

•100

R_{TERM }



At this point the charger enters monitor mode and the

CHRGB output is high impedance. The charger output

remains off in monitor mode until Vout drops by 100mV

and a new charge cycle is initiated.

Monitor Mode

When a charge cycle is completed, the SC806 output

turns off and the device enters monitor mode. If the

voltage of the battery falls below the recharge threshold

of 4.1V the charger will re-initiate a charge cycle. The

maximum current drain of the battery during monitor

mode will be no more than 1µA over temperature

Pre-Charge Mode

Pre-charge mode is automatically enabled whenever the

battery voltage is below 2.8V. It is used to limit the power

dissipation and precondition the battery for fast charg-

ing. The pre-charge current value is selected by the re-

sistor on the ITERM pin. The pre-charge current is pro-

grammable from 10mA to 125mA. The equation to se-

lect the pre-charge current is given by:

NTC Input/NOBAT output

The SC806 detects the absence of the battery by moni-

toring the voltage on the NTC pin. When the NTC pin

voltage exceeds 90% of VCC the NOBAT output is driven

high. This function utilizes the standard NTC configura-

tion with the NTC component residing in the battery pack.

When the battery is removed the NTC element in the

resistor divider is missing and the NTC voltage is pulled

up to VCC.













1.5

R _TERM

PCI =

• 100

Fast-Charge Mode (CC)

The fast-charge or CC mode is active when the battery

voltage is above 2.8V and less than the 4.2V CV voltage

of the battery. The fast-charge current can be set to a

maximum of 1.0A and is selected by the program resis-

tor on the IPRGM pin. The voltage on this pin will repre-

sent the current through the battery enabling a micro-

processor to monitor battery current by sensing the volt-

age on the IPRGM pin. The equation to set the fast-

charge current is given by:

The NOBAT output can be used to signal the system that

the battery has been removed or drive an external LED.

DIS Device Disable Interface

The DIS pin on the SC806 is used to shutdown the SC806

charger. This pin must be pulled low to enable the charger,

high will disable the charger (do not leave floating). The

CPB output indicating the adapter input status is active

regardless of the state of DIS.





1.5





FCI =

•1000









PRGM

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

CHRGB LED Flag

CPB LED Flag

The CHRGB LED driver on the SC806 can be used to

drive an LED and/or signal the system processor.

CHRGB=Low (Charging) and CHRGB=High-Z (Charge Com-

plete). The CHRGB output will be high impedance when

the VCC is in a UV condition. The Table below defines the

CHRGB LED output states.

The CPB LED driver on the SC806 is used to indicate

that the adapter voltage is present at the input to the

SC806. The CPB output is an active low output when

the input voltage is greater than 3V. This feature is ac-

tive regardless of the state of the DIS pin.

LED

Low

High-Z

Blinking

Layout Guidelines

Iout >

term

Iout <

term

OV or OT

Fault

The two most critical aspects of the pcb layout are the

power path and thermal layout. The power path starts

at the Adapter + input and runs to the VCC input of the

SC806, then from the Vout pin of the SC806 to the Bat-

tery + terminal, and completes with the return trace from

the battery - terminal to the adapter - input. All of these

traces need to be designed to handle the required charg-

ing current. The trace from Vout of the SC806 is most

critical and should be made as wide as possible to

minimze IR drops between the regulated voltage at the

SC806 vout pin and the battery terminal. Keep the

Adapter+ to SC806 VCC input trace wide to minimize

voltage drops that will add to the dropout voltage capa-

bility of the SC806. The GND pin of the SC806 should

be connected in a kelvin fashion at the Battery terminal

to eliminate voltage drops in the return path reducing

the regulated battery voltage.

CHRGB

The CHRGB output signifies the charging status. When

the output current is > Itermination, CHRGB=low. CHRGB

is high impedance when Iout is < Itermination. The

CHRGB output is latched high-Z at the end of the charge

cycle when the output current is less than Itermination.

The CHRGB output will remain high until the battery en-

ters a recharge cycle, or if EN, or VCC are toggled.

There are three fault modes detected by the SC806;

(Input under voltage, input over voltage, and Max die tem-

perature or OT). The LED states for these fault modes

are shown below.

Fault

CHRGB

High-Z

The themal performance of the SC806 package requires

a low impedance connection from the heat slug on the

bottom of the package to an external ground plane. This

is best accomplished by using a single large via under

the device connected to a ground plane on the bottom

exposed side of the pcb. The evaluation board uses 1

square inch of copper on the bottom of the pcb and is

capable of 1A charging current.

VCC UVLO

VCC OVP

Tj > 150^oC

Blinking

Overcurrent and Max Temperature Protection

Overcurrent protection is inherent in all modes of opera-

tion. When the device is in charge-mode the output is

current limited to either the pre-charge current limit value

or the fast charge current limit value depending on the

voltage at the output. Max die temperature protection is

included on the SC806. This feature allows the SC806

to operate with maximum power dissipation by disabling

the output current when the die temperature reaches

OT. The result is that the SC806 will operate as a pulse

charger in extreme power dissipation applications deliv-

ering the maximum allowable output current while regu-

lating the internal die temperature to a safe level.

The input and output bulk decoupling capacitors for the

SC806 should be placed near the external terminals for

the adpater and battery. This short low impedance loop

is for the high current spikes that result from input/out-

put hot-plugging of the charger. To minimize these cur-

rent spikes should be minimized. A typical application

requires a 0.1µF input/output capacitor. If the distance

from the external terminals to the SC806 is greater than

1”, 0.1µ local decoupling capacitors at the SC806 may

be required.

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

Evaluation Board Schematic

CHRG+

R806

R805

No Pop

CHRGB CPB

VOUT+

SC806

VCC

VOUT

NTC

CHRGB

CPB

ITERM

NOBAT IPRGM

DIS

GND

LED

No Pop

DIS

1uF

LED

R12

No Pop

R7 No Pop

2.2uF

3.01k

R8 No Pop

NTCV

Charging

Indicator

No Pop

3.01K

ITRM

IPGM

NOBAT

Adapter

Present

Indicator

3.01k

1e6

R10

3.01k

R11

VOUT-

3.01k

CHRG-

Timing Diagram

Charge Mode Timing

UVLO

OVP

VCC

Pre-Charge

Threshold

VOUT

Re-Charge

Threshold

Fast Charge

Soft Start

Termination

Current

IOUT

Pre-Charge

CC-mode

CV-mode

Blink

Low,

CPB

High-Z

CHRGB

Low

High-Z

Enabled

DIS

NTC

= VCC

NoBaT

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

Typical Characteristics

SC806 Charge Curve

0.6

0.5

0.4

0.3

0.2

0.1

4.2

3.8

3.6

3.4

3.2

Vbatt

ChrgB*

Iout

0.5

1.5

2.5

Time (Hrs)

Fast Charge Output Current -vs- Resistance

Pre-Charge Output Current -vs- Resistance

900

800

700

600

500

400

300

Iout_Fast-Charge

Iout_Pre-Charge

200

100

1870

2140

2500

3000

3750

5000

7500

15000 30000

1870

2140

2500

3000

3750

5000

7500

15000 30000

Programming Resistor (ohms)

Output Voltage Load Regulation

Programming Resistor (ohms)

Output Voltage Line Regulation

4.188

4.187

4.186

4.185

4.187

4.1865

4.186

VoutCV

4.1855

4.185

4.1845

4.184

4.183

4.182

4.181

4.1835

4.183

4.1825

4.182

0.075

0.1

0.2

0.3

0.4

0.5

4.5

4.75

5.25

5.5

5.75

Iout (Amps)

Vcc (Volts)

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

Typical Characteristics

Fast Charge I, Pre-Charge I Vcc < 4.2V

Iprogram Voltage -vs- Iout

1.8

1.6

1.4

1.2

0.00%

-35.0%

-30.0%

-25.0%

-20.0%

-15.0%

-10.0%

-5.0%

-1.00%

-2.00%

-3.00%

-4.00%

-5.00%

-6.00%

-7.00%

-8.00%

-9.00%

-10.00%

FastChargeC urrentError

PreChargeC urrentError

0.8

0.6

0.4

0.2

Iprgm_Voltage

Iprgm Voltage Error

0.0%

5.0%

4.5

5.5

15.00%

20.00% 40.00% 60.00% 80.00% 100.00%

Output Current Percent, CC limit = 100%

Input Voltage VCC (volts)

Fast Charge Output Current Line Regulation

Pre-Charge Output Current Line Regulation

800

795

790

785

780

775

770

765

760

755

750

900

800

700

600

500

400

300

200

51.9

51.8

51.7

51.6

51.5

51.4

51.3

51.2

51.1

Iout_PretQ_vcc=5.0

Iout_PreQ_vcc=5.5

Iout_PreQ_vcc=4.5

Iout_fastQ_vcc=5.0

Iout_fastQ_vcc=5.5

Iout_fastQ_vcc=4.5

3.5

4.1

4.15

4.18

4.2

1.5

2.5

2.75

Vout Battery Voltage (Volts)

Drop-out Voltage -vs- Iout

Vout Battery Voltage (Volts)

0.4

0.35

0.3

0.5

0.49

0.48

0.47

0.46

0.45

0.44

0.43

0.42

0.41

0.4

Drop-out_Voltage

Drop-outResistancer

0.25

0.2

0.15

0.1

0.05

100

500

800

Output Current (mA)

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

SC806 State Diagram

Shutdown Mode

Vout/Iout off

Under Voltage will force the

OVP> Vin > UVLO

CPB=Low

SC806 into Shutdown Mode

from any state.

CHRGB High Z

Yes

Dis=Hi

CC=Constant Current

CV=Constant Voltage

CHRGB Low

Start Pre-Charge

Yes

Vout>2.8V

Soft Start CC Mode

Iout=1500/Rprog

Iout=150/Rterm

Vout=CV

Yes

Start CV Mode

Iout<Iterm

Yes

OV or OT forces the

CHRGB High Z

output off and

CHRGB blinks at 1Hz

Charge resumes when the

Fault is removed

Monitor Mode

Vout=off

Vout< CV-100mV

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

Outline Drawing - MLPD-10, 3 x 3

Marking Instructions

806

yyww

TopView

Marking for the SC806 MLPD-10 Lead package:

yyww = Date Code (Example: 0012)

2004 Semtech Corp.

www.semtech.com

SC806

POWER MANAGEMENT

Land Pattern - MLPD-10, 3 x 3

Contact Information

Semtech Corporation

Power Management Products Division

200 Flynn Road, Camarillo, CA 93012

Phone: (805)498-2111 FAX (805)498-3804

2004 Semtech Corp.

www.semtech.com

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SC806IMLTRT产品参数

型号:	SC806IMLTRT
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Active
零件包装代码：	SOIC
包装说明：	HVSON, SOLCC10,.12,20
针数：	10
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8542.39.00.01
风险等级：	5.65
Is Samacsys：	N
可调阈值：	YES
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：	S-PDSO-N10
JESD-609代码：	e3
长度：	3 mm
信道数量：	1
功能数量：	1
端子数量：	10
最高工作温度：	85 °C
最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY
封装代码：	HVSON
封装等效代码：	SOLCC10,.12,20
封装形状：	SQUARE
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	260
电源：	5 V
认证状态：	Not Qualified
座面最大高度：	1 mm
子类别：	Power Management Circuits
最大供电电流 (Isup)：	2.25 mA
最大供电电压 (Vsup)：	6.3 V
最小供电电压 (Vsup)：	3.15 V
标称供电电压 (Vsup)：	5 V
表面贴装：	YES
温度等级：	INDUSTRIAL
端子面层：	MATTE TIN
端子形式：	NO LEAD
端子节距：	0.5 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	40
宽度：	3 mm
Base Number Matches：	1

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