YB1900芯片引脚定义引脚图及功能IC贸易商引脚图技术参数-中国IC网-芯三七

YB1900

Ultra Low Quiescent Current Smart Load Switch

Description

Feature

The YB1900 is a high side slew rate

controlled smart load switch. The slew rate

control in YB1900 can effectively avoid the

large in-rush current which is commonly

observed in normal power switches.

Moreover, the level shift in YB1900 allows

customers to control 1.8 to 6.5V system

with 1.5V logic and without sacrificing

leakage current.

1.8 to 6.5V Input Voltage Range

Slew Rate Limited at 100μs

Very Low R_DS(on), Typically 100mΩ

Less than 1μA shutdown current

Output Voltage as low as 0.6V

Very Low Quiescent Current,

Typically 2μA

Fast shutdown load discharge

Thermal Fault Protection

TTL / CMOS Input Logic Level

2KV ESD Rating

The YB1900 has typical low R_DS(on)at

100mΩ, it allows large power handling

capabilities. And very low quiescent current

and fast load discharge make it ideal for

power sensitive applications nowadays.

EMI Free Circuit

SOT23-5 Package

The YB1900 is available in SOT23-5

package with the temperature range valid

from -40 to 100 ℃.

Green Package (RoHS) Available

Applications

Cellular and Smart Phones

Hot Swap Supplies

Microprocessors and DSP Core

Supplies

PDAs

MP3 Players

Digital Still and Video Cameras

Portable Instruments

Typical Application Circuit

VIN

OUT

YB1900

C_IN

1µF

C_OUT

0.1µF

EN

GND

Figure1：Typical Application Circuit

YB1900 MRev.1.2

www.yobon.com.tw

1

YB1900

Ultra Low Quiescent Current Smart Load Switch

Pin Configuration

OUT

VIN

1

2

3

5

4

GND

EN

SOT23-5

Figure2：YB1900 SOT23-5

Pin Assignment & Description

Table1

1

NAME

OUT

GND

EN

Function

Drain of P-channel Power MOSFET.

Ground Pin. Connect directly to local ground plane.

Enable Control Input.

2

3

4, 5

VIN

Source of P-channel Power MOSFET.

Ordering Information

Table2

Order Number

YB1900ST25

Package Type

SOT23-5

Supplied as

Package Marking

Y9A

3000 Units Tape & Reel

YB1900 MRev.1.2

www.yobon.com.tw

2

YB1900

Ultra Low Quiescent Current Smart Load Switch

Absolute Maximum Ratings (note 1)

Recommended Operating

Conditions ^{(note 2)}

Supply Voltage VIN ................................. 1.8 to 6V

Operating Temperature.................... -40℃ to 85℃

V_INto GND.......................................-0.3V to 6.5V

V_ENto GND ......................................-0.3V to 6.5V

OUT to GND ....................................-0.3V to 6.5V

Maximum Continuous Current...................... 2.2A

Junction Temperature.................................150℃

Storage Temperature.................... -65℃ to 150℃

Lead Temperature ......................................300℃

ESD HBM ......................................................2KV

ESD MM ...................................................... 200V

Thermal Resistance

θJA .........................................................220℃ / W

Note: 1. Exceeding these ratings may damage the device.

2. The device is not guaranteed to function outside of its operating conditions.

Electricity Characteristics

Table3 (V_IN=5V, V_EN=1.5V, T_A=25°C, unless otherwise noted)

Symbol

V_IN

Description

Input Voltage

Test Conditions

Min TYP MAX Units

1.8

5

6.5

4

V

I_Q

Quiescent Current

Shutdown Current

Off Switch Current

V_EN=1.5V

2

μA

I_SD

V_EN=0V, OUT = Open

V_EN=0V, V_OUT= 0

V_IN=5V @ 100mA

V_IN=4.2V @ 100mA

V_IN=3V @ 100mA

V_IN=1.8V @ 100mA

R_OUT= 10Ω

0.05

100

110

130

200

0.6

0.8

0.01

40

1

I_SO

1

130

140

160

250

1

R_DS(ON)On Resistance

mΩ

V_IL

V_IH

EN Input Logic Low

EN Input Logic High

EN Input Leakage

V

R_OUT= 10Ω

0.4

I_SINK

T_D(ON)

V_EN=5.5V

1

μA

μs

Output Turn-On Delay

R_OUT= 10Ω

80

Output Turn-On Rise

Time

T_ON

T_D(OFF)

R_PD

R

_OUT= 10Ω

100

4

150

10

μs

Ω

Output Turn-Off Delay

R_OUT= 10Ω

Output Pull-Down

Resistance

V_EN=0V

150

250

Thermal Shutdown

Temperature

Thermal Recovery

Temperature

T_SD

T_R

140

120

160

140

180

160

℃

Note:

YB1900 MRev.1.2

www.yobon.com.tw

3

YB1900

Ultra Low Quiescent Current Smart Load Switch

Typical Performance Characteristics

Quiescent Current vs. Input Voltage

RDS(ON) vs. VIN

2.5

2

300

280

260

240

220

200

180

160

140

120

100

80

1.5A

1A

1.5

1

500mA

100mA

2A

0.5

0

1

3

4

6

1.5

2

2.5

3

3.5

4

4.5

5

5.5

V_IN(V)

Input Voltage (V)

R_DS(ON)vs. Temperature

180

160

140

120

100

80

VIN=3V

VIN=5V

60

40

20

0

25

40

55

70

85

100

Temperature (

)

℃

YB1900 MRev.1.2

www.yobon.com.tw

4

YB1900

Ultra Low Quiescent Current Smart Load Switch

Turn-On Transient Response

(V_IN=3V; R_L=6Ω)

(V_IN=5V; R_L=10Ω)

Turn-Off Transient Response

(V_IN=3V; R_L=6Ω)

(V_IN=5V; R_L=10Ω)

YB1900 MRev.1.2

www.yobon.com.tw

5

YB1900

Ultra Low Quiescent Current Smart Load Switch

Function Block

Application Information

The YB1900 featured very low quiescent

current and very low RDS(ON) and making

them ideal for battery-powered applications.

The ENABLE control pin is TTL compatible

and driven by 1.5V beyond making the

YB1900 an ideal level-shifting load switch.

Under normal conditions, there is a parasitic

diode between the output & input of the load

switch. In case of VOUT exceeding VIN, this

would forward bias the internal parasitic

diode and allow excessive current flow into

the VOUT pin and possibly damage the load

switch.

Input Capacitor Selection

In applications, where there is a possibility of

VOUT exceeding VIN for brief periods of time

during operation, the use of larger value CIN

capacitor is highly recommended. A larger

value of CIN with respect to COUT will affect a

slower CIN decay rate during shutdown, thus

preventing VOUT from exceeding VIN.

In case of extended period of time for VOUT

exceeding VIN, it is recommended to place a

Schottky diode from VIN to VOUT.

A

1μF or larger input capacitor is

recommended to prevent load transients

from affecting upstream circuits. CIN should

be located as close to the device VIN pin as

practically. There is no specific requirement

type of capacitor is recommended. However,

for higher current operation, ceramic

capacitors are recommended for CIN.

Output Capacitor Selection

Thermal Considerations

For proper slew operation, a 0.1μF or greater

is recommended. The output capacitor has

also no specific capacitor type requirement.

If desired, COUT maybe increased without

limit to accommodate any load transient

The YB1900 is designed to deliver a

continuous load current. The maximum limit

is package power dissipation. At any given

ambient temperature, the maximum package

power dissipation can be determined by the

following equation:

Reverse Output-to-Input Voltage

Conditions and Protection

P_D(MAX)= [T_J(MAX)-T_A] / θ_JA

YB1900 MRev.1.2

www.yobon.com.tw

6

YB1900

Ultra Low Quiescent Current Smart Load Switch

Constraints for the YB1900 are maximum

junction temperature T_J(MAX)= 125℃, and

package thermal resistance, θ_JA= 220℃/W.

The maximum continuous output current for

YB1900 depends on package power

dissipation and the R_DS(ON)of MOSFET at

T_J(MAX).Typical conditions are calculated

under normal ambient condition where T_A=

25℃ At 85℃, P_D(MAX)= 181mW. At T_A= 25℃,

P_D(MAX)= 454mW.

The maximum current is calculated by the

following equation:

I

_OUT< (P_D(MAX)/ R_DS(MAX))^(1/2)

For example, if VIN = 5V, R_DS(MAX)= 100mΩ

and T_A= 25℃, I_OUT(MAX)= 2.2A.

Thermal Shutdown is employed to protect

the device damage when over temperature

160℃.

PCB Layout Consideration

To maximize YB1900 performance, some

board layout rules should be followed:

VIN and VOUT should be routed using wider

than normal traces, and GND should be

connected to a ground plane. For best

performance, CIN and COUT should be

placed close to the package pins.

YB1900 MRev.1.2

www.yobon.com.tw

7

YB1900

Ultra Low Quiescent Current Smart Load Switch

Package Information (SOT23-5)

All the contains in this datasheet are not assuming any responsibility for use of any circuitry described no circuit patent

license are implied and Yobon reserves the right at any time without notice to change said circuitry and specifications.

Yobon Inc. would like to receive your feedback with your recommends and suggestions that is always welcome and with

our appreciations.

YB1900 MRev.1.2

www.yobon.com.tw

8

型号:	YB1900ST25
生命周期：	Contact Manufacturer
Reach Compliance Code：	unknown
风险等级：	5.69
Is Samacsys：	N
接口集成电路类型：	BUFFER OR INVERTER BASED PERIPHERAL DRIVER
Base Number Matches：	1

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