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TPS77012DBVR 参数 Datasheet PDF下载

TPS77012DBVR图片预览
型号: TPS77012DBVR
PDF下载: 下载PDF文件 查看货源
内容描述: 超低功耗50 mA低压降线性稳压器 [ULTRA LOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS]
分类和应用: 线性稳压器IC调节器电源电路光电二极管输出元件
文件页数/大小: 16 页 / 232 K
品牌: TI [ TEXAS INSTRUMENTS ]
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TPS77001, TPS77012, TPS77015, TPS77018, TPS77025
TPS77027, TPS77028, TPS77030, TPS77033, TPS77050
ULTRA LOW-POWER 50-mA LOW-DROPOUT LINEAR REGULATORS
SLVS210C – JUNE 1999 – REVISED SEPTEMBER 1999
D
D
D
D
D
D
D
D
50-mA Low-Dropout Regulator
Available in 1.2-V, 1.5-V, 1.8-V, 2.5-V, 2.7-V,
2.8-V, 3.0-V, 3.3-V, and 5-V Fixed-Output and
Adjustable Versions
Only 17
µA
Quiescent Current at 50 mA
1
µA
Quiescent Current in Standby Mode
Dropout Voltage Typically 35 mV @ 50mA
Over Current Limitation
–40°C to 125°C Operating Junction
Temperature Range
5-Pin SOT-23 (DBV) Package
DBV PACKAGE
(TOP VIEW)
IN
GND
EN
1
2
3
4
NC/FB
5
OUT
description
The TPS770xx family of low-dropout (LDO) voltage regulators offers the benefits of low dropout voltage, ultra
low-power operation, and miniaturized packaging. These regulators feature low dropout voltages and ultra low
quiescent current compared to conventional LDO regulators. Offered in a 5-terminal small outline
integrated-circuit SOT-23 package, the TPS770xx series devices are ideal for micropower operations and
where board space is at a premium.
A combination of new circuit design and process innovation has enabled the usual PNP pass transistor to be
replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the
dropout voltage is very low — typically 35 mV at 50 mA of load current (TPS77050) — and is directly proportional
to the load current. Since the PMOS pass element is a voltage-driven device, the quiescent current is ultra low
(28
µA
maximum) and is stable over the entire range of output load current (0 mA to 50 mA).
Intended for use in portable systems such as
laptops and cellular phones, the ultra low-dropout
TPS77033
GROUND CURRENT
voltage feature and ultra low-power operation
vs
result in a significant increase in system battery
FREE-AIR TEMPERATURE
operating life.
The TPS770xx also features a logic-enabled
sleep mode to shut down the regulator, reducing
quiescent current to 1
µA
typical at T
J
= 25°C. The
TPS770xx is offered in 1.2-V, 1.5-V, 1.8-V, 2.5-V,
2.7-V, 2.8-V, 3.0-V, 3.3-V, and 5-V fixed-voltage
versions and in a variable version (programmable
over the range of 1.2 V to 5.5 V).
22
21
20
19
IO = 50 mA
18
17
16
15
–60 –40 –20
IO = 0 mA
VI = 4.3 V
CO = 4.7
µF
Ground Current –
µ
A
0
20
40
60
80 100 120 140
TA – Free-Air Temperature –
°C
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
©
1999, Texas Instruments Incorporated
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
1