G940T85B资料

Global Mixed-mode Technology Inc.

G940/G941

3.7V 400mA Low Dropout Regulator

Features

󰂄󰀃Dropout voltage typically 0.8V @ IO = 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 (VIN < 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

ORDER NUMBER

PACKAGE TYPE

PIN OPTION

1 2 3 G940T21U SOT VOUT GND VIN G941T24U SOT GND VIN VOUT G940T73U SOT 23 GND VOUT VIN

*For other package types, pin options and package, please contact us at sales @gmt.com.tw Order Number Identification

GXXX XX X X

Packing Type Pin Option Package Type Part Number

PACKAGE TYPE

T2 : SOT T6 : SOT 223 T7 : SOT 23 T8 : µTO92

PIN OPTION

1 2 3

VIN 1 : VOUT GND

VIN GND 2 : VOUT

3 : GND VOUT VIN

VOUT 4 : GND VIN

VOUT 5 : VIN GND

6 : VIN VOUT GND

PACKING

U & D : Tape & Reel D Direction

T : Tube B : Bag

Typical Application Package Type

[Note 4] : Type of COUT

3IOVING940C10.47µFIQVOUTCOUT10µFTop ViewTop ViewTop ViewTop ViewTop View12312312SOT 、223

Ver: 5.5

May 13, 2002

µTO 92SOT 23

1

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Global Mixed-mode Technology Inc.

G940/G941

Absolute Maximum Ratings (Note 1)

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

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

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

Note (1): See Recommended Minimum Footprint.

Operating Conditions (Note 1)

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

Electrical Characteristics

VIN =5V, IO = 400mA, CIN = 1 µF, COUT =10 µF, All specifications apply for TA = TJ = 25°C. [Note 3]

PARAMETER CONDITIONS MIN TYP MAX UNITS Output Voltage Accuracy IO = 10mA -2 - +3 % Line Regulation VIN = 4V to 7V, IO = 50mA - 0.08 0.9 %/V Load Regulation IO = 10mA to 400mA - - 2.2 % Output Impedance 100mA DC and 100mA AC, fo = 120Hz - 100 - mΩ

=Quiescent Current VIN5V - 0.6 - mA Ripple Rejection fi = 120 Hz, 1VP-P, Io = 100mA - 42 - dB

Dropout Voltage Short Circuit Current

IO = 400mA IO = 100mA

Over Temperature

- - -

0.8 130 0.76

0.9 150 -

V mV A

- 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, TJmax ; total thermal re-sistance, θJA, and ambient temperature TA. The maximum allowable power dissipation at any ambient tem-perature is Tjmax-TA / 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 package is 250°C/W (See Recommend Minimum Footprint). The safe operation in SOT 23 & SOT 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.

Ver: 5.5

May 13, 2002

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.

2

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Global Mixed-mode Technology Inc.

G940/G941

Load Transient

Typical Performance Characteristics

(VIN=5V, CIN=1µF, COUT=10µF, TA=25°C, unless otherwise noted.)

Line Transient

Ch1: Vout (offset=3.70V)Ch2: Vin (offset=5.0V)Iout=100mA

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

Output Voltage Accuracy vs. Load Current

2.000% Dropout Voltage vs. Load Current

900800Output Voltage AccuracyDropout Voltage (mV)1.500%7006005004003002001001.000%0.500%0.000%-0.500%-1.000%0501001502002503003504004505005506000050100150200250300350400450Load Current (mA)Load Current (mA) Ground Current vs. Load Current

2.01.81.6Ground Current (mA)1.41.21.00.80.60.40.20.0050100Load Current (mA)150200250300350400

Ver: 5.5

May 13, 2002

3

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Safe Operating Area[Power Dissipation Limit]5004504003503002502001501005000.00.40.81.21.62.02.42.81oz Copper on SOT 23 PackageMounted on recommended mimimum footprint (RθJA=350°C/W)TA=25℃TA=55℃TA=85℃Global Mixed-mode Technology Inc.

G940/G941

Maximum Power Dissipation of SOT 230.5Maximum Recommended Output CurrentTA=25°C,Still Air0.4Power Dissipation (W)Output Current (mA)0.30.20.1Still Air1oz Copper on SOT 23 PackageMounted on recommend mimimum footprint (RθJA=350°C/W)0.025355565758595105115125Input-Output Voltage Differential VIN-VOUT (V)Note: VIN(max) <= 6.5V

Amibent Temperature TA (°C)Safe Operating Area [Power Dissipation Limit]500450400Maximum Recommended Output CurrentTA=25°C,Still AirMaximum Power Dissipation of SOT 0.60.5Output Current (mA)3503002502001501005000.00.40.81.21.62.02.42.81oz Copper on SOT PackageMounted on recommended mimimum footprint (RθJA=250°C/W)TA=25℃TA=55℃TA=85℃Power Dissipation (W)0.40.30.20.1025355565758595105115125Still Air1oz Copper on SOT PackageMounted on recommend mimimum footprint (RθJA=250°C/W)Input-Output Voltage Differential VIN-VOUT (V)Note: VIN(max) <= 6.5V

Amibent Temperature TA (°C)Recommend Minimum Footprint

Ver: 5.5

May 13, 2002

4

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Global Mixed-mode Technology Inc.

DD1Package Information

G940/G941

POLISHEHEA1eCMATTE FINISHAbb1bPOLISH

SOT- (T2) Package

SYMBOLS

DIMENSIONS IN MILLIMETERS DIMENSIONS IN INCHES

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

Ver: 5.5

May 13, 2002

5

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ADB1αCGlobal Mixed-mode Technology Inc.

G940/G941

13°(4X)

HELee1L213°(4X)

A1B

SOT-223 (T6) Package

SYMBOLS

MILLIMETERS INCHES 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 0.2 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 0.2 0.287 L L2 α

0.90 MIN

0.036 MIN

0.06 BSC 0.0024 BSC

0º 10º 0º 10º

Ver: 5.5

May 13, 2002

6

TEL: 886-3-5788833 http://www.gmt.com.tw

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CDGlobal Mixed-mode Technology Inc.

G940/G941

LEHeθ1AA2A1bSOT-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

SYMBOLS

DIMENSIONS IN MILLIMETERS

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

Ver: 5.5

May 13, 2002

7

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LAGlobal Mixed-mode Technology Inc.

G940/G941

EeGHDbA1R2.00θ1(2 X)Cθ2 (2 X) µTO-92 (T8) Package SYMBOLS DIMENSIONS IN INCHES DIMENSIONS IN MILLIMETERS MIN NOM MAX MIN NOM MAX A 2.40 2.50 2.60 0.094 0.098 0.102 A1 0.70 0.80 0.90 0.028 0.032 0.036 b 0.35 0.45 0.55 0.014 0.018 0.022 C ----- 0.40 ----- ----- 0.016 ----- D 2.80 3.00 3.20 0.110 0.118 0.126 E 3.80 4.00 4.20 0.149 0.157 0.165 e ----- 1.27 ----- ----- 0.050 ----- F 1.91 2.11 2.31 0.075 0.083 0.091 G 3.35 3.55 3.75 0.132 0.140 0.148 H 0.00 ----- 0.15 0.000 ----- 0.006 L 13.80 14.00 14.20 0.3 0.551 0.559 θ1 ----- 2° ----- ----- 2° ----- θ2 ----- 5° ----- ----- 5° ----- Package Orientation Feed DirectionSOT 、223 Package Orientation

Feed DirectionSOT 23 Package Orientation

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.

Ver: 5.5

May 13, 2002

8

TEL: 886-3-5788833 http://www.gmt.com.tw