Global Mixed-mode Technology Inc.
G924
300mA Low-Noise LDO Regulators
Features
Low, 90µA No-Load Supply Current
Guaranteed 300mA Output Current
Dropout Voltage is 200mV @ 150mA Load
PSRR=53dB @ 1kHz
Over-Temperature Protection and Short-Circuit
Protection
Max. Supply Current in Shutdown Mode < 1µA
Low Output Noise at 28µV
RMS
Stable with low cost ceramic capacitors
Output voltage: 1.20V~5.00V
General Description
The G924 is a low supply current, low dropout linear
regulator that comes in a space saving SOT-23-5
package. The supply current at no-load is 90µA. In the
shutdown mode, the maximum supply current is less
than 1µA. Operating voltage range of the G924 is from
2.5V to 5.5V. The over-current protection limit is set at
550mA typical and 400mA minimum. An over-tem-
perature protection circuit is built-in in the G924 to
prevent thermal overload. These power saving
features make the G924 ideal for use in the battery-
powered applications such as notebook computers,
cellular phones, and PDA’s.
Applications
Notebook Computers
Cellular Phones
PDAs
Digital still Camera and Video Recorders
Hand-Held Devices
Audio Codec
Pin Configuration
Typical Application Circuit
SHDN
1
5
VIN
VIN
OUT
OUTPUT
VOLTAGE
GND
2
G924
4
SOT-23-5
OUT
＋
C
BATTERY
G924
IN
_
1µF
SHDN
BYP
GND
C
OUT
1
µ
F
C
BYP
10nF
BYP
3
Fixed mode
Ver: 0.2 Preliminary
Oct 01, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
1
Global Mixed-mode Technology Inc.
Ordering Information
ORDER
NUMBER
G924-330T1U
G924
TEMP.
RANGE
-40°C~ +85°C
ORDER NUMBER
(Pb free)
G924-330T1Uf
MARKING
94AXx
VOLTAGE
3.30V
PACKAGE
SOT-23-5
For other output voltage, please contact us at sales
@
gmt.com.tw
Note:
T1: SOT-23-5
U: Tape & Reel
Selector Guide
ORDER NUMBER
G924-120T1U
G924-130T1U
G924-140T1U
G924-150T1U
G924-160T1U
G924-170T1U
G924-180T1U
G924-190T1U
G924-200T1U
G924-210T1U
G924-220T1U
G924-230T1U
G924-240T1U
G924-250T1U
G924-260T1U
G924-270T1U
G924-280T1U
G924-285T1U
G924-290T1U
G924-300T1U
G924-310T1U
G924-315T1U
G924-320T1U
G924-330T1U
G924-340T1U
G924-350T1U
G924-360T1U
G924-370T1U
G924-380T1U
G924-390T1U
G924-400T1U
G924-410T1U
G924-420T1U
G924-430T1U
G924-440T1U
G924-450T1U
G924-460T1U
G924-470T1U
G924-475T1U
G924-480T1U
G924-490T1U
G924-500T1U
ORDER NUMBER
(Pb free)
G924-120T1Uf
G924-130T1Uf
G924-140T1Uf
G924-150T1Uf
G924-160T1Uf
G924-170T1Uf
G924-180T1Uf
G924-190T1Uf
G924-200T1Uf
G924-210T1Uf
G924-220T1Uf
G924-230T1Uf
G924-240T1Uf
G924-250T1Uf
G924-260T1Uf
G924-270T1Uf
G924-280T1Uf
G924-285T1Uf
G924-290T1Uf
G924-300T1Uf
G924-310T1Uf
G924-315T1Uf
G924-320T1Uf
G924-330T1Uf
G924-340T1Uf
G924-350T1Uf
G924-360T1Uf
G924-370T1Uf
G924-380T1Uf
G924-390T1Uf
G924-400T1Uf
G924-410T1Uf
G924-420T1Uf
G924-430T1Uf
G924-440T1Uf
G924-450T1Uf
G924-460T1Uf
G924-470T1Uf
G924-475T1Uf
G924-480T1Uf
G924-490T1Uf
G924-500T1Uf
OUTPUT VOLTAGE (V)
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.10
2.20
2.30
2.40
2.50
2.60
2.70
2.80
2.85
2.90
3.00
3.10
3.15
3.20
3.30
3.40
3.50
3.60
3.70
3.80
3.90
4.00
4.10
4.20
4.30
4.40
4.50
4.60
4.70
4.75
4.80
4.90
5.00
MARKING
94AAx
94ABx
94ACx
94ADx
94AEx
94AFx
94AGx
94AHx
94AIx
94AJx
94AKx
94ALx
94AMx
94ANx
94AOx
94APx
94AQx
94ARx
94ASx
94ATx
94AUx
94AVx
94AWx
94AXx
94AYx
94AZx
94BAx
94BBx
94BCx
94BDx
94BEx
94BFx
94BGx
94BHx
94BIx
94BJx
94BKx
94BLx
94BMx
94BNx
94BOx
94BPx
Ver: 0.2 Preliminary
Oct 01, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
2
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
V
IN
to GND.………………………………-0.3V to +6.5V
Output Short-Circuit Duration…….….……….…Infinite
SHDN to GND……..………....….….-0.3V to V
IN
+0.3V
OUT to GND………………………-0.3V to (V
IN
+ 0.3V)
Continuous Power Dissipation (T
A
= +25°C)
SOT-23-5………..…………..……….……….…520mW
Note (1): See Recommended Minimum Footprint
G924
Operating Temperature Range…….....-40°C to +85°C
Junction Temperature………………...………+150°C
θ
JA (1)
….…..…………….……….…..…..240°C/Watt
Storage Temperature Range……….-65°C to +150°C
Reflow Temperature (soldering, 10sec)…..…….260°C
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
=5V, 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)
Short Circuit Current
Ground Pin Current
I
LIM
Isc
I
Q
V
OUT
=1.50V
V
OUT
=1.80V
V
OUT
=2.50V
V
OUT
=3.00V
V
OUT
=3.30V
V
OUT
=4.75V
V
OUT
=5.00V
SYMBOL
V
IN
CONDITION
V
OUT
≥2.50V,
I
OUT
=1mA
MIN TYP MAX UNIT
2.5
-2
-3
-4
300
400
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
550
280
90
1.36
1.10
0.58
0.41
0.36
0.25
0.24
0.06
0.02
53
28
5.5
2
3
4
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
mA
mA
mA
µA
%
V
V
OUT
2.50V>V
OUT
≥1.80V,
I
OUT
=1mA
1.80V>V
OUT
≥1.20V,
I
OUT
=1mA
Dropout Voltage (Note 4)
V
DROP
I
OUT
=300mA
V
Line Regulation
Load Regulation
Ripple Rejection
Output Voltage Noise
(10Hz to 100kHz)
SHUTDOWN
SHDN
Input Threshold
∆V
LNR
∆V
LDR
PSRR
e
n
V
IN
=V
OUT
+0.1V,to 5.5V I
OUT
=10mA
I
OUT
= 10mA to 300mA
F=1kHz, 0.45V
P-P
, I
OUT
=10mA
C
OUT
= 1µF, I
OUT
= 1mA, C
BYP
= 10nF
%/V
%/mA
dB
µV
RMS
V
IH
V
IL
I
SHDN
I
QSHDN
T
SHDN
∆T
SHDN
Regulator enabled
Regulator shutdown
V
SHDN
= V
IN
V
OUT
= 0V
T
A
= +25°C
T
A
= +25°C
1.5
---
---
---
---
---
---
---
0.003
0.2
145
25
---
0.4
1
1
---
---
V
µA
µA
°C
°C
SHDN
Input Bias Current
Shutdown Supply Current
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Note 1: 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.
Note 2: Guaranteed by line regulation test.
Note 3: Not tested. For design purposes, the current limit should be considered 400mA minimum.
Note 4: The dropout voltage is defined as (V
IN
-V
OUT
) when V
OUT
is 100mV below the target value of V
OUT
. The per-
formance of every G924 part, see “Typical Performance Characteristics”.
Ver: 0.2 Preliminary
Oct 01, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
3
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(V
IN
=5V, C
IN
=1µF, C
OUT
=1µF, V
SHDN
= V
IN
, G924-475, T
A
=25°C, unless otherwise noted.)
G924
Load Transient
Line Transient
Short Circuit Current
70
60
50
PSRR (dB)
40
30
20
10
0
0.01
200mA
Ripple Rejection
100mA
300mA
V
IN
=6V ;
C
IN
=1µF ; C
OUT
=1µF
C
BYP
=10nF ; V
r
=224mv
0.1
1
10
Frequency (KHz)
100
Turn-ON
Turn-OFF
Ver: 0.2 Preliminary
Oct 01, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
4
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(continued)
G924
Dropout Voltage vs. I
L
Overcurrent Protection Characteristics
300
250
Dropout Voltage (mV)
200
150
100
50
0
0
50
T
A
=85°C
T
A
=25°C
T
A
=-25°C
100
150
I
L
(mA)
200
250
300
Output Voltage vs. Temperature
5.2
5.1
5.0
Output Voltage (V)
4.9
4.8
4.7
4.6
4.5
4.4
4.3
4.2
-25 -15 -5
5
15 25 35 45 55 65 75 85
Temperature (°C)
V
IN
=5.0V
V
IN
=5.5V
I
L
=10mA
Output Noise
Safe Operating Area
[Power Dissipation Limit]
400
350
Output Current (mA)
300
250
200
150
100
50
0
0.1
0.4
0.7
1.0
1.3
1.6
1.9
2.2
Input-Output Voltage Differential V
IN
-V
OUT
(V)
Note: V
IN
(max) <= 5.5V
T
A
=85°C
T
A
=55°C
T
A
=25°C
1oz Copper on SOT-23-5 Package
Mounted on recommended mimimum
footprint (R
θ
JA
=240°C/W)
Maximum Recommended Output Current
Still air
Max. Power Dissipation vs. Temperature
0.7
0.6
Power Dissipation (W)
0.5
0.4
0.3
0.2
0.1
0
25
35
45
55
65
75
85
95 105 115 125
Amibent Temperature T
A
(°C)
Still Air
1oz Copper on SOT-23-5 Package
Mounted on recommended mimimum
footprint (R
θJA
=240°C/W)
Ver: 0.2 Preliminary
Oct 01, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
5
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