Global Mixed-mode Technology Inc.
G914X
300mA High PSRR, Low-Noise LDO Regulators
Features
Ultra Low Output Noise⎯30µV (rms)
Ultra Low 55µA No-Load Supply Current
Ultra Low Dropout 70mV @ 50mA Load
Guarantee 300mA Output Current
Over-Temperature and Short-Circuit Protection
Fixed Mode: 2.70V (G914A), 2.80V (G914B)
3.00V (G914C), 3.30V (G914D)
2.50V (G914E), 2.85V (G914F)
1.50V (G914G), 1.80V (G914H)
Adjustable Mode: from 1.25V to 5.50V (G914Z)
PSRR=70dB
Max. Supply Current in Shutdown Mode < 1µA
Stable with low cost ceramic capacitors
General Description
The G914X is a low supply current, high PSRR low
dropout linear regulator that comes in a space saving
SOT-23-5 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 pro-
tection limit is set at 500mA typical and 400mA mini-
mum. 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.
Applications
Notebook Computers
Cellular Phones
PDA
Hand-Held Devices
Battery-Powered Application
Ordering Information
ORDER
NUMBER
G914A
G914B
G914C
G914D
G914E
G914F
G914G
G914H
G914Z
ORDER NUMBER
(Pb free)
G914Af
G914Bf
G914Cf
G914Df
G914Ef
G914Ff
G914Gf
G914Hf
G914Zf
MARKING
4Axx
4Bxx
4Cxx
4Dxx
4Exx
4Fxx
4Gxx
4Hxx
4Zxx
VOLTAGE
2.70V
2.80V
3.00V
3.30V
2.50V
2.85V
1.50V
1.80V
Adjustable
TEMP.
RANGE
-40°C~ +85°C
-40°C~ +85°C
-40°C~ +85°C
-40°C~ +85°C
-40°C~ +85°C
-40°C~ +85°C
-40°C~ +85°C
-40°C~ +85°C
-40°C~ +85°C
PACKAGE
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
Pin Configuration
G914A~G914H
IN
1
5
OUT
Typical Application Circuit
G914A~G914H
IN
OUT
OUTPUT
VOLTAGE
＋
GND
2
BATTERY
C
IN
1µF
－
SHDN
BYP
GND
SHDN
3
4
BYP
C
BYP
10nF
C
OUT
4.7µF
SOT-23-5
G914Z
Fixed mode
G914Z
IN
OUT
R1
＋
C
IN
－
1µF
BATTERY
SET
SHDN
GND
R2
5
OUT
OUTPUT
VOLTAGE
IN
1
GND
2
C
OUT
4.7µF
SHDN 3
4
SET
SOT-23-5
Adjustable mode
Ver: 1.8
Jul 24, 2007
TEL: 886-3-5788833
http://www.gmt.com.tw
1
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
V
IN
to GND. . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +7V
Output Short-Circuit Duration. . . . . . . . . . .. . . . . .Infinite
All Other Pins to GND. . . . . . . . . . .-0.3V to (V
IN
+ 0.3V)
Thermal Resistance Junction to Ambient, (θ
JA
)
SOT-23-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240°C/W
G914X
Operating Temperature Range. . . . . . .-40°C to +85°C
Juction Temperature. . . . . . . . . . . . . . . . . . . . .+150°C
Storage Temperature Range. . . . . . . -65°C to +160°C
Reflow Temperature (soldering, 10sec) . . . . . . 260°C
Note
(1)
: See Recommended Minimum Footprint
Stresses beyond those listed under
“
Absolute Maximum Ratings
”
may cause permanent damage to the device. These are stress ratings
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
(V
IN
=V
OUT(STD)
+1V, V
SHDN
=V
IN
, T
A
=T
J
=25°C, unless otherwise noted.) (Note 1)
PARAMETER
Input Voltage (Note 2)
Output Voltage Accuracy
Maximum Output Current
Current Limit (Note 3)
Ground Pin Current
I
LIM
I
LOAD
= 0mA
I
Q
V
IN
=3.6V
I
OUT
= 1mA
I
OUT
= 50mA, V
OUT
≥
2.7V Version
V
O (NOM)
≥
3.0V
I
OUT
= 150mA
Dropout Voltage (Note 4)
V
DROP
2.5V≤V
O (NOM)
≤2.85V
V
O (NOM)
= 1.8V
V
O (NOM)
= 1.5V
V
O (NOM)
≥
3.0V
I
OUT
=300mA
2.5V≤V
O (NOM)
≤2.85V
V
O (NOM)
= 1.8V
V
O (NOM)
= 1.5V
Line Regulation
Load Regulation (Note 5)
Power Supply Rejection Ratio
Output Voltage Temperature
Coefficient
Output Voltage Noise
(10Hz to 100kHz)
(G914H)
e
n
V
IN
=V
OUT
+1V
ΔV
LNR
ΔV
LDR
PSRR
V
IN
=V
OUT
+100mV to 5.5V, I
OUT
= 1mA
I
OUT
= 10mA to 300mA
I
OUT
= 10mA C
BYP
= 10nF, f = 120HZ
I
LOAD
= 50mA
I
LOAD
= 300mA
SYMBOL
V
IN
CONDITIONS
Variation from specified V
OUT
, I
OUT
=1mA,V
OUT
≥2.5V
version
MIN
Note2
-2
-3
-4
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
TYP
---
---
---
---
300
500
55
145
265
2
70
230
250
380
510
450
500
760
910
0.1
0.1
70
30
52
35
30
26
MAX UNITS
5.5
2
3
4
---
---
120
---
---
---
---
---
---
---
---
600
660
1500
1800
0.28
1
---
---
---
---
---
---
µV
RMS
%/V
%
dB
ppm/°C
mV
µA
mA
mA
%
V
V
OUT
For G914H, I
OUT
=1mA
For G914G, I
OUT
=1mA
ΔV
O
/ΔT I
OUT
= 50mA, T
J
= 25°C to 125°C
C
OUT
= 1µF, I
OUT
= 150mA, C
BYP
=1nF
C
OUT
= 1µF, I
OUT
= 150mA, C
BYP
=10nF
C
OUT
= 1µF, I
OUT
= 150mA, C
BYP
= 100nF
C
OUT
= 1µF, I
OUT
= 1mA, C
BYP
= 10nF
Ver: 1.8
Jul 24, 2007
TEL: 886-3-5788833
http://www.gmt.com.tw
2
Global Mixed-mode Technology Inc.
Electrical Characteristics
(V
IN
=V
OUT(STD)
+1V, V
SHDN
=V
IN
, T
A
=T
J
=25°C, unless otherwise noted.)
PARAMETER
SHUTDOWN
SHDN
Input Threshold
SHDN
Input Bias Current
G914X
MIN
1.5
---
---
---
---
---
SYMBOL
V
IH
V
IL
I
SHDN
I
Q SHDN
T
SHDN
ΔT
SHDN
V
SET
I
SET
CONDITIONS
Regulator enabled
Regulator shutdown
V
SHDN
= V
IN
V
OUT
= 0V
T
A
= +25°C
T
A
= +25°C
TYP
---
---
0.003
---
150
15
1.25
5
MAX UNITS
---
0.4
0.1
1
---
---
1.275
30
V
µA
Shutdown Supply Current
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
SET INPUT
SET Reference Voltage
SET Input Leakage Current
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
°C
°C
V
nA
V
IN
= 2.5V to 5.5V,I
OUT
= 1mA
V
SET
= 1.3V
1.225
---
Limits is 100% production tested at T
A
= +25°C. Low duty pulse techniques are used during test to maintain
junction temperature as close to ambient as possible.
V
IN (min)
=V
OUT (STD)
+V
DROPOUT
Not tested. For design purposes, the current limit should be considered 400mA minimum to 600mA maximum.
The dropout voltage is defined as (V
IN
- V
OUT
) when V
OUT
is 100mV below the value of V
OUT
for V
IN
= V
OUT
+1V. The per-
formance of every G914X version, see
“Typical
Performance Characteristics”.
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load
regulation in the load range from 1mA to 300mA. Changes in output due to heating effects are covered by the thermal
regulation specification.
Ver: 1.8
Jul 24, 2007
TEL: 886-3-5788833
http://www.gmt.com.tw
3
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(V
IN
= V
O
+1V, C
IN
=1µF, C
OUT
=1µF, V
SHDN
= V
IN
, G914D, T
A
=25°C, unless otherwise noted.)
Output Voltage vs. Load Current
3.340
3.330
3.320
400
G914X
Ground Current vs. Load Current
G914D
350
Ground Current (µA)
Output Voltage (V)
300
250
200
150
100
50
0
V
IN
=3.6V
No Load
3.310
3.300
3.290
3.280
3.270
3.260
3.250
3.240
0
50
100
150
200
250
300
0
50
100
150
200
250
300
Load Current (mA)
Load Current (mA)
Output Voltage vs. Input Voltage
3.5
3.0
400
350
Supply Current vs. Input Voltage
No Load
I
LOAD
=300mA
300
Output Voltage (V)
Supply Current (µA)
2.5
2.0
1.5
1.0
0.5
0.0
0
1
2
3
4
5
6
250
200
150
100
50
I
LOAD
=50mA
I
LOAD
=0mA
0
0
1
2
3
4
5
6
Input Voltage (V)
Input Voltage (V)
Dropout Voltage vs. Load Current
1000
900
Ouptut Noise 10HZ to 100kHZ
T
A
=25°C
G914H
G914E
Dropout Voltage (mV)
800
700
600
500
400
300
200
100
0
0
50
100
150
200
250
300
G914G
Top to down
G914A
G914B
G914F
G914C
G914D
Loading (mA)
Ver: 1.8
Jul 24, 2007
TEL: 886-3-5788833
http://www.gmt.com.tw
4
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(continued)
Ground Current vs. Temperature
100
G914X
SHDN Input Bias Current vs. Temperature
0.20
Ground Current (µA)
80
SHDN Input Bias Current (µA)
G914D
V
IN
= 4.3V
I
OUT
=0A
0.10
G914D
V
IN
=4.3V
V
SHDN
=V
IN
60
0.00
40
-0.10
20
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 10 11 12 13
0 0 0 0
-0.20
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 10 11 12 13
0 0 0 0
Junction Temperature T
J
(°C)
Junction Temperature T
J
(°C)
Shutdown Supply Current vs. Temperature
1.00
3.36
G914D
V
IN
= 4.3V
Output Voltage vs. Temperature
3.34
G914D
I
LOAD
=1mA
V
IN
=5.5V
Shutdown Supply Current(µA)
0.60
Output Voltage (V)
3.32
0.20
3.30
V
IN
=4.3V
3.28
V
IN
=3.4V
3.26
-0.20
-0.60
-1.00
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 10 11 12 13
0 0 0 0
3.24
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 10 11 12 13
0 0 0 0
Junction Temperature T
J
(°C)
Junction Temperature T
J
(°C)
Dropout Voltage vs. Temperature
400
350
G914D
Dropout Voltage (mV)
300
I
LOAD
=150mA
250
200
150
100
50
I
LOAD
=0mA
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 10 11 12 13
0 0 0 0
I
LOAD
=50mA
Junction Temperature T
J
(°C)
Ver: 1.8
Jul 24, 2007
TEL: 886-3-5788833
http://www.gmt.com.tw
5
