G941T84U中文资料

3.7V 400mA Low Dropout Regulator

Features

Dropout voltage typically 0.8V @ I O = 400mA Output current in excess of 400mA Output voltage accuracy +3%/-2% Quiescent current, typically 600μA Internal short circuit current limit Internal over temperature protection

General Description

The G940/G941 positive 3.7V voltage regulator fea-tures the ability to source 400mA of output current with a dropout voltage of typically 0.8V over the en-tire operating temperature range. A low quiescent current is provided over the entire output current range. The typical quiescent current is 0.6mA. Fur-thermore, the quiescent current is smaller when the regulator is in the dropout mode (V IN < 3.7V).

Familiar regulator features such as over temperature and over current protection circuits are provided to prevent it from being damaged by abnormal operating conditions.

Ordering Information

PIN OPTION

ORDER NUMBER

PACKAGE TYPE

1 2 3

G940T21U SOT 89 V OUT GND V IN G941T24U SOT 89 GND V IN V OUT G940T73U SOT 23 GND V OUT V IN

*For other package types, pin options and package, please contact us at sales @https://www.wendangku.net/doc/b21322296.html, Order Number Identification

Type Pin Option Type

Part Number

PACKAGE TYPE

PIN OPTION

PACKING

T2 : SOT 89 1 2 3

U & D : Tape & Reel D Direction

T6 : SOT 223 1 : V OUT GND

V IN T : Tube T7 : SOT 23 2 : V OUT

V IN

GND B : Bag T8 : μTO92 3 : GND V OUT V IN

4 : GND V IN

V OUT 5 : V IN GND

V OUT

6 : V IN V OUT GND

Typical Application Package Type

[Note 4] : Type of C OUT

SOT 893μTO 92SOT 23

、223

V OUT

Absolute Maximum Ratings (Note 1)

Input Voltage……………………………..……..…..…10V Power Dissipation Internally Limited ..(Note 2) Maximum Junction Temperature………….….…...150°C Storage Temperature Range…..…..…..-65°C ≤ T J ≤+150°C Lead Temperature, Time for Wave Soldering

SOT 89, SOT23 Package….….…..……..…....260°C, 4s Continuous Power Dissipation (T A = + 25°C)

SOT 23(1)…….…………………….….……….……...0.3W SOT 89(1)……………………….………..………..…0.42W

Note (1): See Recommended Minimum Footprint.

Operating Conditions (Note 1)

Input Voltage………………………….…………….4V~7V Temperature Range………………….…0°C ≤ T J ≤125°C

Electrical Characteristics

V IN =5V, I O = 400mA, C IN = 1 μF, C OUT =10 μF, All specifications apply for T A = T J = 25°C. [Note 3]

PARAMETER CONDITIONS MIN TYP MAX UNITS

Output Voltage Accuracy I O = 10mA -2 - +3 % Line Regulation V IN = 4V to 7V, I O = 50mA - 0.08 0.9 %/V Load Regulation I O = 10mA to 400mA - - 2.2 % Output Impedance 100mA DC and 100mA AC, fo = 120Hz - 100 - m ?

Quiescent Current V IN =

5V - 0.6 - mA Ripple Rejection f i = 120 Hz, 1V P-P , Io = 100mA - 42 - dB

I O = 400mA - 0.8 0.9 V Dropout Voltage I O = 100mA - 130 150 mV Short Circuit Current

-

0.76

-

A

Over Temperature

- 125 - °C

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Condi-tions are conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics.

Note 2: The maximum power dissipation is a function of the maximum junction temperature, T Jmax ; total thermal re-sistance, θJA , and ambient temperature T A . The maximum allowable power dissipation at any ambient tem-perature is T jmax -T A / θJA . If this dissipation is exceeded, the die temperature will rise above 130°C and IC

will go into thermal shutdown. For the G940/G941 in SOT 23 package, θJA is 350°C/W and in the SOT 89 package is 250°C/W (See Recommend Minimum Footprint). The safe operation in SOT 23 & SOT 89 package, it can see “Typical Performance Characteristics” (Safe Operating Area).

Note3: Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as

possible.

Note4: The type of output capacitor should be tantalum or aluminum.

Definitions

Dropout Voltage

The input/output Voltage differential at which the regulator output no longer maintains regulation against further reductions in input voltage. Measured when the output drops 100mV below its nominal value, dropout voltage is affected by junction temperature, load cur-rent and minimum input supply requirements.

Line Regulation

The change in output voltage for a change in input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that average chip temperature is not significantly af-fected.

Load Regulation

The change in output voltage for a change in load current at constant chip temperature. The measure-ment is made under conditions of low dissipation or by using pulse techniques such that average chip tem-perature is not significantly affected.

Maximum Power Dissipation

The maximum total device dissipation for which the regulator will operate within specifications.

Quiescent Bias Current

Current which is used to operate the regulator chip and is not delivered to the load.

Typical Performance Characteristics

(V IN =5V, C IN =1μF, C OUT =10μF, T A =25°C, unless otherwise noted.)

Ch1: Vout (offset=3.70V)

Ch1: Iout (400mA/div)Ch2: Vin (offset=5.0V)Ch2: Vout (offset=3.70V)

Iout=100mA

Ground Current vs. Load Current

Line Transient

Load Transient

Output Voltage Accuracy vs. Load Current

Dropout Voltage vs. Load Current

Recommend Minimum Footprint

Note: V IN(max) <= 6.5V

Note: V IN(max)

<= 6.5V

Package Information

SOT-89 (T2) Package

DIMENSIONS IN MILLIMETERS DIMENSIONS IN INCHES

SYMBOLS

MIN NOM MAX MIN NOM MAX

A 1.40 1.50 1.60 0.055 0.059 0.063 A1 0.80 1.04 ----- 0.031 0.041 ----- b 0.36 0.42 0.48 0.014 0.016

0.048 b1 0.41 0.47 0.53 0.016 0.018 0.020 C 038 0.40 0.43 0.014 0.015 0.017 D 4.40 4.50 4.60 0.173 0.177 0.181 D1 1.40 1.60 1.75 0.055 0.062 0.069 HE ----- ----- 4.25 ----- ----- 0.167 E 2.40 2.50 2.60 0.094 0.098 0.102 e 2.90 3.00 3.10 0.114 0.118 0.122

SOT-223 (T6) Package

MILLIMETERS INCHES SYMBOLS

MIN MAX MIN MAX

A 1.55

1.80 0.061 0.071 A1 0.02 0.12 0.0008 0.0047 B 0.60 0.80 0.024 0.031 B1

2.90

3.10 0.114 0.122 C 0.24

0.32 0.009 0.013 D 6.30 6.70 0.248 0.264 E 3.30 3.70 0.130 0.146 e 2.30 BSC

0.090 BSC e1 4.60 BSC 0.181 BSC H 6.70 7.30 0.264 0.287 L 0.90 MIN

0.036 MIN

L2 0.06 BSC 0.0024 BSC

α

0o 10o 0o 10o

13°(4X)

α(4X)

SOT-23 (T7) Package

Note:

1.Package body sizes exclude mold flash protrusions or gate burrs

2.Tolerance ±0.1000 mm (4mil) unless otherwise specified

3.Coplanarity: 0.1000mm

4.Dimension L is measured in gage plane

DIMENSIONS IN MILLIMETERS

SYMBOLS

MIN NOM MAX

A 1.00 1.10 1.30 A1

0.00 ----- 0.10 A2 0.70 0.80 0.90 b 0.35 0.40 0.50 C 0.10 0.15

0.25 D 2.70 2.90 3.10 E 1.40 1.60 1.80 e ----- 1.90(TYP)

----- H 2.60 2.80 3.00 L 0.37 ------ ----- θ1 1o 5o 9o

GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications.

SOT 23 Package Orientation

SOT 89、223 Package Orientation