GMT G914H, G914G, G914F, G914E, G914D Datasheet

Global Mixed-mode Technology Inc.

150mA Low-Noise LDO Regulators

Features

Ultra Low Output Noise

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Ultra Low 55µA No-Load Supply Current

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Ultra Low Dropout 70mV @ 50mA Load

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Guarantee 150mA Output Current

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Over-Temperature and Short-Circuit Protection

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Fixed: 2.70V (G914A), 2.80V (G914B)

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3.00V (G914C), 3.30V (G914D)

2.50V (G914E), 2.85V (G914F)

1.50V(G914G), 1.80V(G914H)

Max. Supply Current in Shutdown Mode < 1µA

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Stable with low cost ceramic capacitors

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Applications

Notebook Computers

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Cellular Phones

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PDA

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Hand-Held Devices

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Battery-Powered Application

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Pin Configuration

30µV (rms)



G914X

General Description

The G914X is a low supply current, low dropout linear
regulator that comes in a space saving SOT23-5
package. The supply current at no-load is 55µA. In the
shutdown mode, the maximum supply current is less
than 1µA. Operating voltage range of the G914X is
from 2.5V to 5.5V. The over-current protection limit is
set at 350mA typical and 200mA minimum. An
over-temperature protection circuit is built-in in the
G914X to prevent thermal overload. These power
saving features make the G914X ideal for use in the
battery-powered applications such as notebook com­puters, cellular phones, and PDA’s.

Ordering Information

PART MARKING VOLTAGE

G914A 4Axx 2.70V -40°C~ +85°C SOT 23-5

G914B 4Bxx 2.80V -40°C~ +85°C SOT 23-5

G914C 4Cxx 3.00V -40°C~ +85°C SOT 23-5

G914D 4Dxx 3.30V -40°C~ +85°C SOT 23-5

G914E 4Exx 2.50V -40°C~ +85°C SOT 23-5

G914F 4Fxx 2.85V -40°C~ +85°C SOT 23-5

G914G 4Gxx 1.50V -40°C~ +85°C SOT 23-5

G914H 4Hxx 1.80V -40°C~ +85°C SOT 23-5

TEMP.

RANGE

PIN-

PACKAGE

Typical Operating Circuit

IN

IN

1

1

2

2

GND

GND

3

SHDN

SHDN

Ver: 1.1

Sep 18, 2002

3

G914X

G914X

SOT23-5

SOT23-5

OUTPUT

OUT

OUT

5

5

＋

＋

C

C

IN

IN

_

_

1µF

BATTERY

BATTERY

4

4

BYP

BYP

1µF

IN OUT

IN OUT

G914X

G914X

SHDN

SHDN

GND

GND

Fixed mode

Fixed mode

BYP

BYP

C

C

BYP

BYP

10nF

10nF

TEL: [phone]

http://www.gmt.com.tw

1

OUTPUT
VOLTAGE

VOLTAGE

C

C

OUT

OUT

1µF

1µF

Global Mixed-mode Technology Inc.

Absolute Maximum Ratings

VIN to GND……..………………..….….………-0.3V to +7V
Output Short-Circuit Duration.…..….……..…….….Infinite
All Other Pins to GND……….……….-0.3V to (V
Continuous Power Dissipation (T

= +25°C)

A

SOT23-5 …………………………..…………...…..520 mW

+ 0.3V)

IN

G914X

Operating Temperature Range….…..... -40°C to +85°C

Junction Temperature………………...…….……+150°C

(1)

…....……………….………………..…..240°C/Watt

θ

JA

Storage Temperature Range………….-65°C to +160°C
Lead Temperature (soldering, 10sec)….….……+300°C

Note (1): See Recommended Minimum Footprint (Figure 2)

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress rat-

ings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of

the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Electrical Characteristics

(VIN=V

OUT(STD)

+1V, V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input Voltage (Note 2) VIN Note2 5.5 V

Output Voltage Accuracy V

Maximum Output Current 300 mA
Current Limit (Note 3) I

Ground Pin Current IQ VIN =3.6V

Dropout Voltage (Note 4) V

Line Regulation
Load Regulation (Note 5)
Power Supply Rejection Ratio PSRR I
Output Voltage Temperature Coefficient

Output Voltage Noise
(10Hz to 100kHz)
(G914H)

SHUTDOWN

SHDN

Input Threshold

SHDN

Input Bias Current

Shutdown Supply Current I

THERMAL PROTECTION

Thermal Shutdown Temperature T
Thermal Shutdown Hysteresis

Note 1: Limits is 100% production tested at T

maintain junction temperature as close to ambient as possible.

Note 2: V

IN (min)=VOUT (STD)+VDROPOUT

Note 3: Not tested. For design purposes, the current limit should be considered 150mA minimum to 420mA maximum.
Note 4: The dropout voltage is defined as (V

The performance of every G914X version, see “Typical Performance Characteristics”.

Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested

for load regulation in the load range from 0mA to 150mA. Changes in output due to heating effects are cov­ered by the thermal regulation specification.

SHDN

=VIN, TA=TJ =25°C, unless otherwise noted.) (Note 1)

Variation from specified V
For G914H, I

OUT

For G914G, I

350 mA

LIM

I

= 1mA 2

OUT

I

= 50mA, V

OUT

DROP

= 150mA

I

OUT

V

Δ

∆

∆

V

VIN=V

LNR

V

I

LDR

/ΔT

O

VIN=V

e

n

I

+100mV to 5.5V, I

OUT

= 0mA to 150mA 1 %

OUT

= 30mA C

OUT

= 50mA, TJ = 25°C to 125°C 30 ppm/°C

OUT

+1V

OUT

=1mA -3 3

OUT

=1mA -4 4

OUT

I

LOAD

I

LOAD

OUT

V

O (NOM)

2.5V≤VO
V

O (NOM)

V

O (NOM)

= 10nF, f = 120HZ 57 dB

BYP

C

OUT

C

OUT

C

OUT

C

OUT

, I

OUT

OUT

= 0mA 55 120
= 50mA 145

2.7V Version 70

≥

≥ 3.0V 230 300

≤

(NOM)

= 1.8V 380 480
= 1.5V 510 610

= 1mA 0.1 0.28 %/V

OUT

= 1µF, I
= 1µF, I
= 1µF, I
= 1µF, I

OUT

OUT

OUT

OUT

VIH Regulator enabled V
V

Regulator shutdown 0.4

IL

T

= VIN

V

I

SHDN

Q SHDN

SHDN

T

∆

SHDN

SHDN

V

= 0V TA = +25°C 1

OUT

150 °C

15 °C

= +25°C. Low duty pulse techniques are used during test to

A

= +25°C

A

- V

IN

) when V

OUT

is 100mV below the value of V

OUT

=1mA,V

2.5V version -2 2

≥

OUT

%

µA

mV

2.85V 250 330

= 150mA, C

= 150mA, C

= 150mA, C

= 1mA, C

=1nF 52

BYP

=10nF 35

BYP

= 100nF 30

BYP

= 10nF 26

BYP

- 0.7

IN

0.003 0. 1

for VIN = V

OUT

OUT

mV

µV

RMS

V

µA

+1V.

Ver: 1.1

Sep 18, 2002

2

TEL: [phone]

http://www.gmt.com.tw

Global Mixed-mode Technology Inc.

Typical Performance Characteristics

(V

IN

= V

O(STD)

+1V, V

Output Voltage vs. Load Current Ground Current vs. Load Current

SHDN

= VIN, CIN=1µF, C

=1µF, G914D, TA =25°C, unless otherwise noted.)

OUT

G914X

3.340

3.330

3.320

3.310

3.300

3.290

3.280

3.270

3.260

Output Voltage (V)

3.250

3.240

0 102030405060708090100110120130140150

Load Current (mA)

250

200

150

100

50

Ground Current (µA)

0

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Load Current (mA)

Output Voltage vs. Input Voltage Supply Current vs. Input Voltage

3.50

3.00

2.50

2.00

1.50

1.00

Output Voltage (V)

0.50

0.00
0123456

No Load

Input Voltage (V)

130
120
110
100

90
80
70
60
50
40
30
20

Supply Current (µA)

10

0

01234567

ILOAD=0A

Input Voltage (V)

ILOAD=50mA

Dropout Voltage vs. Loading by G914X Ouptut Noise 10HZ to 100KHZ

800

700

600

500

400

300

200

Dropout Voltage (mV)

100

0

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

G914G

Loading (mA)

G914H

TA=25°C

G914E

G914A
G914B
G914F
G914C
G914D

Ver: 1.1

Sep 18, 2002

3

TEL: [phone]

http://www.gmt.com.tw