G916-450TOUF [GMT]

300mA High PSRR, Low Noise, LDO Regulators; 300毫安高PSRR ,噪声低, LDO稳压器
G916-450TOUF
型号: G916-450TOUF
厂家: GLOBAL MIXED-MODE TECHNOLOGY INC    GLOBAL MIXED-MODE TECHNOLOGY INC
描述:

300mA High PSRR, Low Noise, LDO Regulators
300毫安高PSRR ,噪声低, LDO稳压器

稳压器 电源电路
文件: 总13页 (文件大小:480K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
Global Mixed-mode Technology Inc.  
G916  
300mA High PSRR, Low Noise, LDO Regulators  
Features  
General Description  
„
„
„
„
„
Low, 90µA No-Load Supply Current  
Guaranteed 300mA Output Current  
Dropout Voltage is 200mV @ 150mA Load  
PSRR=65dB @ 120Hz; 55dB @ 1kHz  
Over-Temperature Protection and Short-Circuit  
Protection  
The G916 series is a low supply current, high PSRR,  
low noise, and low dropout linear regulator that comes  
in a space saving TSOT-23-5, 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 is from 2.5V to 6.0V. The  
over-current protection limit is set at 550mA typical. An  
over- temperature protection circuit is built-in in the  
Device to prevent thermal overload. These power  
saving features make the G916 series ideal for use in  
the battery-powered applications such as notebook  
computers, cellular phones, and PDAs.  
„
„
„
„
Fixed Mode: 1.20V~5.00V (G916-XXX)  
Adjustable Mode: from 1.25V to 5.50V (G916)  
Max. Supply Current in Shutdown Mode < 1µA  
Low Output Noise at 28µVRMS with bypass Ca-  
pacitor  
„
Stable with low cost ceramic capacitors  
The G916 has two modes of operation. When the SET  
pin is connected to ground, its output is a pre-set value:  
3.3V. There is no external component needed. When an  
output other than the preset value is needed, two ex-  
ternal resistors should be used as a voltage divider. The  
output voltage is then adjusted by the resistor ratio.  
G916-XXX is with fixed-mode output. The output voltage  
range is from 1.2V to 5.0V.  
Applications  
„
„
„
„
„
„
Notebook Computers  
Cellular Phones  
PDAs  
Digital still Camera and Video Recorders  
Hand-Held Devices  
Audio Codec  
Pin Configuration  
OUTPUT  
VOLTAGE  
OUT  
IN  
OUT  
SET  
IN  
1
5
4
R1  
R2  
G916  
SET  
2
3
GND  
G916  
CIN  
1µF  
SHDN  
BATTERY  
COUT  
1µF  
GND  
SHDN  
SOT-23-5TSOT-23-5  
Adjustable mode  
OUT  
BYP  
IN  
1
5
4
OUTPUT  
VOLTAGE  
IN  
OUT  
BYP  
G916-XXX  
SHDN  
CIN  
2
3
GND  
COUT  
1µF  
G916-XXX  
_ 1µF  
BATTERY  
CBYP  
10nF  
GND  
SHDN  
SOT-23-5TSOT-23-5  
Fixed mode  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
1
Global Mixed-mode Technology Inc.  
Ordering Information  
G916  
ORDER  
NUMBER  
ORDER NUMBER  
(Pb free)  
TEMP.  
RANGE  
MARKING  
VOLTAGE  
PACKAGE  
G916-250TOU  
G916-270TOU  
G916T1U  
G916-120T1U  
G916-330T1U  
G916-250TOUf  
G916-270TOUf  
G916T1Uf  
G916-120T1Uf  
G916-330T1Uf  
96ANx  
96APx  
16xx  
96AAx  
6Axx  
2.50V  
2.70V  
Adjustable  
1.20V  
TSOT-23-5  
TSOT-23-5  
SOT-23-5  
SOT-23-5  
SOT-23-5  
-40°C~ +85°C  
-40°C~ +85°C  
-40°C~ +85°C  
-40°C~ +85°C  
-40°C~ +85°C  
3.30V  
For other output voltage, please contact us at sales@gmt.com.tw  
Note: TO: TSOT-23-5  
U: Tape & Reel  
T1: SOT-23-5  
Selector Guide  
ORDER NUMBER  
ORDER NUMBER  
OUTPUT VOLTAGE (V)  
MARKING  
(Pb free)  
G916TOU  
G916TOUf  
Adjustable  
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  
16xx  
96AAx  
96ABx  
96ACx  
96ADx  
96AEx  
96AFx  
96AGx  
96AHx  
96AIx  
96AJx  
96AKx  
96ALx  
96AMx  
96ANx  
96AOx  
96APx  
96AQx  
96ARx  
96ASx  
96ATx  
96AUx  
96AVx  
96AWx  
6Axx  
96AYx  
96AZx  
96BAx  
96BBx  
96BCx  
96BDx  
96BEx  
96BFx  
96BGx  
96BHx  
96BIx  
96BJx  
96BKx  
96BLx  
96BMx  
96BNx  
96BOx  
96BPx  
G916-120TOU  
G916-130TOU  
G916-140TOU  
G916-150TOU  
G916-160TOU  
G916-170TOU  
G916-180TOU  
G916-190TOU  
G916-200TOU  
G916-210TOU  
G916-220TOU  
G916-230TOU  
G916-240TOU  
G916-250TOU  
G916-260TOU  
G916-270TOU  
G916-280TOU  
G916-285TOU  
G916-290TOU  
G916-300TOU  
G916-310TOU  
G916-315TOU  
G916-320TOU  
G916-330TOU  
G916-340TOU  
G916-350TOU  
G916-360TOU  
G916-370TOU  
G916-380TOU  
G916-390TOU  
G916-400TOU  
G916-410TOU  
G916-420TOU  
G916-430TOU  
G916-440TOU  
G916-450TOU  
G916-460TOU  
G916-470TOU  
G916-475TOU  
G916-480TOU  
G916-490TOU  
G916-500TOU  
G916-120TOUf  
G916-130TOUf  
G916-140TOUf  
G916-150TOUf  
G916-160TOUf  
G916-170TOUf  
G916-180TOUf  
G916-190TOUf  
G916-200TOUf  
G916-210TOUf  
G916-220TOUf  
G916-230TOUf  
G916-240TOUf  
G916-250TOUf  
G916-260TOUf  
G916-270TOUf  
G916-280TOUf  
G916-285TOUf  
G916-290TOUf  
G916-300TOUf  
G916-310TOUf  
G916-315TOUf  
G916-320TOUf  
G916-330TOUf  
G916-340TOUf  
G916-350TOUf  
G916-360TOUf  
G916-370TOUf  
G916-380TOUf  
G916-390TOUf  
G916-400TOUf  
G916-410TOUf  
G916-420TOUf  
G916-430TOUf  
G916-440TOUf  
G916-450TOUf  
G916-460TOUf  
G916-470TOUf  
G916-475TOUf  
G916-480TOUf  
G916-490TOUf  
G916-500TOUf  
TO: TSOT-23-5  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
2
Global Mixed-mode Technology Inc.  
Selector Guide  
G916  
ORDER NUMBER  
(Pb free)  
ORDER NUMBER  
OUTPUT VOLTAGE (V)  
MARKING  
G916T1U  
G916T1Uf  
Adjustable  
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  
16xx  
96AAx  
96ABx  
96ACx  
96ADx  
96AEx  
96AFx  
96AGx  
96AHx  
96AIx  
96AJx  
96AKx  
96ALx  
96AMx  
96ANx  
96AOx  
96APx  
96AQx  
96ARx  
96ASx  
96ATx  
96AUx  
96AVx  
96AWx  
6Axx  
96AYx  
96AZx  
96BAx  
96BBx  
96BCx  
96BDx  
96BEx  
96BFx  
96BGx  
96BHx  
96BIx  
96BJx  
96BKx  
96BLx  
96BMx  
96BNx  
96BOx  
96BPx  
G916-120T1U  
G916-130T1U  
G916-140T1U  
G916-150T1U  
G916-160T1U  
G916-170T1U  
G916-180T1U  
G916-190T1U  
G916-200T1U  
G916-210T1U  
G916-220T1U  
G916-230T1U  
G916-240T1U  
G916-250T1U  
G916-260T1U  
G916-270T1U  
G916-280T1U  
G916-285T1U  
G916-290T1U  
G916-300T1U  
G916-310T1U  
G916-315T1U  
G916-320T1U  
G916-330T1U  
G916-340T1U  
G916-350T1U  
G916-360T1U  
G916-370T1U  
G916-380T1U  
G916-390T1U  
G916-400T1U  
G916-410T1U  
G916-420T1U  
G916-430T1U  
G916-440T1U  
G916-450T1U  
G916-460T1U  
G916-470T1U  
G916-475T1U  
G916-480T1U  
G916-490T1U  
G916-500T1U  
G916-120T1Uf  
G916-130T1Uf  
G916-140T1Uf  
G916-150T1Uf  
G916-160T1Uf  
G916-170T1Uf  
G916-180T1Uf  
G916-190T1Uf  
G916-200T1Uf  
G916-210T1Uf  
G916-220T1Uf  
G916-230T1Uf  
G916-240T1Uf  
G916-250T1Uf  
G916-260T1Uf  
G916-270T1Uf  
G916-280T1Uf  
G916-285T1Uf  
G916-290T1Uf  
G916-300T1Uf  
G916-310T1Uf  
G916-315T1Uf  
G916-320T1Uf  
G916-330T1Uf  
G916-340T1Uf  
G916-350T1Uf  
G916-360T1Uf  
G916-370T1Uf  
G916-380T1Uf  
G916-390T1Uf  
G916-400T1Uf  
G916-410T1Uf  
G916-420T1Uf  
G916-430T1Uf  
G916-440T1Uf  
G916-450T1Uf  
G916-460T1Uf  
G916-470T1Uf  
G916-475T1Uf  
G916-480T1Uf  
G916-490T1Uf  
G916-500T1Uf  
T1: SOT-23-5  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
3
Global Mixed-mode Technology Inc.  
G916  
Absolute Maximum Ratings  
IN to GND. . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V  
Output Short-Circuit Duration . . . . . . . . . . . . .Infinite  
SET, BYP to GND . . . . . . . . . . . . . . . . . -0.3V to 7V  
Operating Temperature Range . . . . . . .-40°C to 85°C  
Junction Temperature . . . . . . . . . . . . . . . . . . . . . 150°C  
Thermal Resistance Junction to Ambient, (θJA)  
SOT-23-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . 240°C/W(1)  
TSOT-23-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . .196°C/W  
Storage Temperature Range . . . . . . . . .-65°C to 160°C  
Reflow Temperature (soldering, 10sec) . . . . . . . .260°C  
SHDN to GND . . . . . . . . . . . . . . . . . . .-0.3V to 7V  
SHDN to IN . . . . . . . . . . . . . . . . . . . . .-7V to 0.3V  
OUT to GND . . . . . . . . . . . . . ..-0.3V to (VIN + 0.3V)  
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  
(VIN =3.6V, V SHDN =VIN, TA =25°C, unless otherwise noted.) (Note 1)  
PARAMETER  
Input Voltage (Note 2)  
SYMBOL  
VIN  
CONDITION  
MIN TYP MAX UNIT  
2.5  
-2  
---  
---  
---  
---  
---  
---  
---  
6.0  
2
V
Output Voltage Accuracy (adjustable mode)  
VOUT  
Variation from specified VOUT, IOUT=1mA  
VOUT 2.50V, IOUT =1mA  
%
-2  
2
Output Voltage Accuracy (fixed mode)  
VOUT  
%
2.50V>VOUT 1.80V, IOUT=1mA  
1.80V>VOUT 1.20V, IOUT=1mA  
-3  
3
-4  
4
Adjustable Output Voltage Range (Note 3)  
Maximum Output Current  
Current Limit (Note 4)  
VOUT  
VSET  
300  
5.5  
---  
---  
---  
---  
V
mA  
mA  
mA  
µA  
ILIM  
Isc  
IQ  
400 550  
Short Circuit Current  
---  
---  
---  
---  
---  
---  
---  
---  
---  
280  
90  
Ground Pin Current  
VOUT=1.50V  
VOUT=1.80V  
VOUT=2.50V  
1.36 1.7  
1.10 1.4  
0.58 0.8  
0.41 0.5  
0.36 0.5  
0.25 0.5  
0.24 0.5  
Dropout Voltage (Note 5)  
VDROP IOUT =300mA  
V
VOUT=3.00V  
VOUT=3.30V  
VOUT=4.75V  
V
OUT=5.00V  
SET=GND, VIN=V(STD)+0.1V to 6.2V  
IOUT=10mA  
Line Regulation  
ΔVLNR  
ΔVLDR  
---  
0.06 0.12 %/V  
--- 0.02 %/mA  
Load Regulation  
IOUT=10mA to 300mA  
---  
---  
---  
Ripple Rejection  
PSRR F=120Hz, 0.45VP-P, IOUT=10mA  
65  
28  
---  
dB  
Output Voltage Noise (10Hz to 100kHz)  
en  
COUT=1µF, IOUT=1mA, CBYP=10nF  
--- µVRMS  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
4
Global Mixed-mode Technology Inc.  
G916  
Electrical Characteristics (continued)  
(VIN =3.6V, V SHDN =VIN, TA =25°C, unless otherwise noted.) (Note 1)  
PARAMETER  
SHUTDOWN  
SYMBOL  
CONDITION  
MIN TYP MAX UNIT  
VIH  
VIL  
Regulator enabled  
Regulator shutdown  
1.5  
---  
---  
---  
---  
SHDN Input Threshold  
V
0.4  
I
SHDN  
V SHDN = VIN  
TA = +25°C  
TA = +25°C  
SHDN Input Bias Current  
Shutdown Supply Current  
SET INPUT  
--- 0.003 0.1  
--- 0.2  
µA  
µA  
IQSHDN VOUT = 0V  
1
VIN = 2.5V to 5.5V,  
OUT = 1mA  
TA = +25°C  
1.225 1.25 1.275  
SET Reference Voltage (Note 3)  
VSET  
ISET  
V
I
TA = TMIN to TMAX  
TA = +25°C  
---  
---  
1.25 ---  
SET Input Leakage Current (Note 3)  
THERMAL PROTECTION  
VSET = 1.3V  
5
30  
nA  
Thermal Shutdown Temperature  
Thermal Shutdown Hysteresis  
TSHDN  
---  
---  
145  
25  
---  
---  
°C  
°C  
ΔTSHDN  
Note 1: Limits is 100% production tested at TA= +25°C. Low duty pulse techniques are used during test to maintain junc-  
tion temperature as close to ambient as possible.  
Note 2: Guaranteed by line regulation test.  
Note 3: Adjustable mode only.  
Note 4:  
Not tested. For design purposes, the current limit should be considered 400mA minimum to 650mA maximum.  
Note 5: The dropout voltage is defined as (VIN-VOUT) when VOUT is 100mV below the target value of VOUT. The performance of  
every G916 part, see Typical Performance Characteristics.  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
5
Global Mixed-mode Technology Inc.  
G916  
Typical Performance Characteristics  
(VIN =5V, CIN=1µF, COUT=1µF, V SHDN = VIN, G916-475, TA =25°C, unless otherwise noted.)  
Line Transient  
Load Transient  
Short Circuit Current  
Ripple Rejection  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
10mA  
300mA  
100mA  
V =4V ; COUT=1 F ;  
µ
IN  
CBYP=10nF ; Vr=245mV  
0.01  
0.1  
1
10  
100  
Frequency (KHz)  
Turn-On  
Turn-Off  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
6
Global Mixed-mode Technology Inc.  
Typical Performance Characteristics (continued)  
G916  
Dropout Voltage vs. IL  
Overcurrent Protection Characteristics  
300  
250  
200  
150  
100  
50  
T =85 C  
°
A
T =25 C  
°
A
T =-25 C  
°
A
0
0
50  
100  
150  
IL (mA)  
200  
250  
300  
Output Voltage vs. Temperature  
Output Noise  
5.2  
5.1  
5.0  
4.9  
4.8  
4.7  
4.6  
4.5  
4.4  
4.3  
4.2  
IL=10mA  
VIN=5.5V  
VIN=5.0V  
-25 -15 -5  
5
15 25 35 45 55 65 75 85  
Temperature ( C)  
°
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
7
Global Mixed-mode Technology Inc.  
Pin Description  
G916  
PIN  
G916-XXX  
NAME  
FUNCTION  
G916  
1
1
IN  
Regulator Input. Supply voltage can range from +2.5V to +6.0V. Bypass with 1µF to GND  
Ground. This pin also functions as a heatsink. Solder to large pads or the circuit board  
ground plane to maximize thermal dissipation.  
2
3
2
GND  
Active-Low Shutdown Input. A logic low reduces the supply current to less than 1µA. Connect to IN  
for normal operation.  
SHDN  
3
Feedback Input for Setting the Output Voltage. Connect to GND to set the output voltage to  
4
SET the preset output voltage. Connect to an external resistor divider for adjustable-output op-  
eration.  
This is a reference bypass pin. It should connect external 10nF capacitor to GND to reduce  
4
5
BYP  
output noise. Bypass capacitor must be no less than 1nF. (CBYP1nF)  
Regulator Output. Sources up to 300mA. Bypass with a 1µF, 0.2Ω typical ESR capacitor  
5
OUT  
to GND.  
feedback voltage force to be the same as the 1.25V  
bandgap reference. The output voltage, VOUT, is then  
given by the following equation:  
Detailed Description  
The block diagram of the G916 is shown in Figure 1. It  
consists of an error amplifier, 1.25V bandgap reference,  
PMOS output transistor, internal feedback voltage divider,  
mode comparator, shutdown logic, over current protec-  
tion circuit, and over temperature protection circuit.  
VOUT = 1.25 (1 + R1/R2).  
(1)  
Alternatively, the relationship between R1 and R2 is  
given by:  
The mode comparator compares the SET pin voltage  
with an internal 350mV reference. If the SET pin volt-  
age is less than 350mV, the internal feedback voltage  
divider’s central tap is connected to the non-inverting  
input of the error amplifier. The error amplifier com-  
pares non-inverting input with the 1.25V bandgap ref-  
erence. If the feedback voltage is higher than 1.25V,  
the error amplifier’s output becomes higher so that the  
PMOS output transistor has a smaller gate-to-source  
voltage (VGS). This reduces the current carrying capa-  
bility of the PMOS output transistor, as a result the  
output voltage decreases until the feedback voltage is  
equal to 1.25V. Similarly, when the feedback voltage is  
less than 1.25V, the error amplifier causes the output  
PMOS to source more current to pull the feedback  
voltage up to 1.25V. Thus, through this feedback ac-  
tion, the error amplifier, output PMOS, and the voltage  
dividers effectively form a unity-gain amplifier with the  
R1 = R2 (VOUT /1.25 - 1).  
(2)  
For the reasons of reducing power dissipation and  
loop stability, R2 is chosen to be 100KΩ. For G916,  
R1 is 164K, and the pre-set VOUT is 3.30V.  
When external voltage divider is used, as shown in  
Figure 2, the SET pin voltage will be larger than  
350mV. The non-inverting input of the amplifier will be  
connected to the external voltage divider. However,  
the operation of the feedback loop is the same, so that  
the conditions of Equations 1 and 2 are still true. The  
output voltage is still given by Equation 1.  
For G916-XXX, adjust the internal reference and in-  
ternal voltage divider. It provides a fixed mode output  
ranging from 1.2V to 5V.  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
8
Global Mixed-mode Technology Inc.  
G916  
IN  
SHDN  
OVER CURRENT  
PROTECT & DYNAMIC  
FEEDBACK  
P
ERROR  
AMP  
SHUTDOWN  
LOGIC  
OUT  
SET  
R1  
OVER TEMP.  
PROTECT  
1.25V  
Vref  
350mV  
R2  
MODE COMPARATOR  
GND  
IN  
SHDN  
OVER CURRENT  
PROTECT & DYNAMIC  
FEEDBACK  
P
ERROR  
AMP  
SHUTDOWN  
LOGIC  
OUT  
R1  
OVER TEMP.  
PROTECT  
1.25V  
Vref  
BYP  
R2  
GND  
Figure 1. Functional Diagram of Adjustable-mode & Fixed mode  
TEL: 886-3-5788833  
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Ver: 1.7  
Jan 25, 2006  
9
Global Mixed-mode Technology Inc.  
G916  
mount device, heat sinking is accomplished by using  
the heat spreading capabilities of the PC board and its  
copper traces. In the case of a SOT-23-5 package, the  
thermal resistance is typically 240°C/Watt. (See Rec-  
ommended Minimum Footprint). Refer to Figure 3a &  
3b is the G916 valid operating region (Safe Operating  
Area) & refer to Figure 4 is maximum power dissipa-  
tion of SOT-23-5.  
OUTPUT  
VOLTAGE  
OUT  
IN  
R1  
R2  
G916  
SET  
RL  
SHDN  
CIN  
BATTERY  
COUT  
1µF  
1µF  
The die attachment area of the G916s lead frame is  
connected to pin 2, which is the GND pin. Therefore,  
the GND pin of G916 can carry away the heat of the  
G916 die very effectively. To improve the maximum  
power providing capability, connect the GND pin to  
ground using a large ground plane near the GND pin.  
GND  
Applications Information  
Figure 2. Adjustable Output Using External  
Feedback Resistors  
Capacitor Selection and Regulator Stability  
Normally, use a 1µF capacitor on the input and a 1µF  
capacitor on the output of the G916. Larger input ca-  
pacitor values and lower ESR provide better sup-  
ply-noise rejection and transient response. A higher-  
value input capacitor (10µF) may be necessary if large,  
fast transients are anticipated and the device is lo-  
cated several inches from the power source.  
Over Current Protection  
The G916 uses a current sense-resistor to monitor the  
output current. A portion of the PMOS output transis-  
tor’s current is mirrored to a resistor such that the  
voltage across this resistor is proportional to the output  
current. Once the output current exceeds limit thresh-  
old, G916 would be protected with a limited output  
current. Further more, when the output is short to  
ground, the output current would be folded-back to a  
less limit.  
Power-Supply Rejection and Operation from  
Sources Other than Batteries  
The G916 is designed to deliver low dropout voltages  
and low quiescent currents in battery powered sys-  
tems. Power-supply rejection is 65dB at low frequen-  
cies. As the frequency increases above 20kHz, the  
output capacitor is the major contributor to the rejec-  
tion of power-supply noise.  
Over Temperature Protection  
To prevent abnormal temperature from occurring, the  
G916 has a built-in temperature monitoring circuit.  
When it detects the temperature is above 145°C, the  
output transistor is turned off. When the IC is cooled  
down to below 120°C, the output is turned on again. In  
this way, the G916 will be protected against abnormal  
junction temperature during operation.  
When operating from sources other than batteries,  
improve supply-noise rejection and transient response  
by increasing the values of the input and output ca-  
pacitors, and using passive filtering techniques.  
Shutdown Mode  
Load Transient Considerations  
When the SHDN pin is connected a logic low voltage,  
the G916 enters shutdown mode. All the analog cir-  
cuits are turned off completely, which reduces the  
current consumption to only the leakage current. The  
G916 output pass transistor would get into high im-  
pedance level. There is an internal discharge path to  
help to shorten discharge delay time.  
The G916 load-transient response graphs show two  
components of the output response: a DC shift of the  
output voltage due to the different load currents, and  
the transient response. Typical overshoot for step  
changes in the load current from 10mA to 300mA is  
8mV. Increasing the output capacitor's value and de-  
creasing its ESR attenuates transient spikes.  
Operating Region and Power Dissipation  
Input-Output (Dropout) Voltage  
Since the G916 is a linear regulator, its power dissipa-  
tion is always given by P = IOUT (VIN – VOUT). The  
maximum power dissipation is given by:  
A regulator's minimum input-output voltage differential  
(or dropout voltage) determines the lowest usable sup-  
ply voltage. In battery-powered systems, this will de-  
termine the useful end-of-life battery voltage. Because  
the G916 use a P-channel MOSFET pass transistor,  
their dropout voltage is a function of RDS(ON) multiplied  
by the load current.  
PD(MAX) = (TJ–TA) /θJA,=(150°C-25°C)/240°C/W = 520mW  
Where (TJ–TA) is the temperature difference the G916  
die and the ambient air,θJA, is the thermal resistance  
of the chosen package to the ambient air. For surface  
TEL: 886-3-5788833  
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Ver: 1.7  
Jan 25, 2006  
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Global Mixed-mode Technology Inc.  
G916  
Layout Guide  
The output capacitor also must be located a distance  
of not more than 1cm from output to a clean analog  
ground. Because it can filter out the output spike  
caused by the surge current due to the inductive effect  
of the package pin and the printed circuit boards rout-  
ing wire. Figure 5 is adjustable mode of G916 PCB  
layout.  
An input capacitance of 1µF is required between the  
G916 input pin and ground (the amount of the capaci-  
tance may be increased without limit), This capacitor  
must be located a distance of not more than 1cm from  
the input and return to a clean analog ground.  
Input capacitor can filter out the input voltage spike  
caused by the surge current due to the inductive effect  
of the package pin and the printed circuit board’s rout-  
ing wire. Otherwise, the actual voltage at the IN pin  
may exceed the absolute maximum rating.  
Safe Operating Area of IOUT=150mA  
Safe Operating Area of IOUT=300mA  
[Power Dissipation Limit]  
[Power Dissipation Limit]  
250  
400  
Still air  
1oz copper on SOT-23-5 package  
Mounted on recommended foorprint (RθJA=240°C/W)  
350  
300  
250  
200  
150  
100  
50  
TA = 55°C  
200  
TA = 85°C  
TA = 25°C  
TA = 25°C  
TA = 55°C  
150  
100  
TA = 85°C  
Still Air  
50  
0
1oz copper on SOT-23-5 Package  
Mounted on recommended foorprint (RθJA=240°C/W)  
0
0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3  
Input-Output Voltage Differential VIN-VOUT (V)  
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2  
Input-Output Voltage Differential VIN-VOUT (V)  
Note: VIN(max) <= 5.5V  
Note: VIN (max) <= 5.5V  
Figure 3a. Safe Operating Area (IOUT=150mA)  
Figure 3b. Safe Operating Area (IOUT=300mA)  
Maximum Power Dissipation of SOT-23-5  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
Still air  
1oz copper on SOT-23-5 package  
Mounted on recommended foorprint (RθJA=240°C/W)  
25  
35  
45  
55  
65  
75  
85  
95 105 115 125  
*Distance between pin & capacitor must no more than 1cm  
Amibent Temperature TA (°C)  
Figure 5. Adjustable Mode  
Figure 4. Power Dissipation vs. Ambient Temperature  
Recommend Minimum Footprint  
TSOT-23-5SOT-23-5  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
11  
Global Mixed-mode Technology Inc.  
Package Information  
G916  
C
D
L
H
E
θ1  
e1  
e
A
A2  
A1  
b
TSOT-23-5 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  
DIMENSION IN MM  
SYMBOL  
DIMENSION IN INCH  
MIN.  
-----  
0.00  
-----  
0.35  
0.10  
2.70  
1.40  
-----  
-----  
2.60  
0.37  
1°  
NOM.  
-----  
MAX.  
1.00  
0.10  
0.90  
0.50  
0.25  
3.10  
1.80  
-----  
MIN.  
-----  
NOM.  
-----  
MAX.  
0.039  
0.004  
0.035  
0.020  
0.010  
0.122  
0.071  
-----  
A
A1  
A2  
b
-----  
0.000  
-----  
-----  
-----  
-----  
0.40  
0.014  
0.004  
0.106  
0.055  
-----  
0.016  
0.006  
0.114  
0.063  
0.075(TYP)  
0.037  
0.110  
-----  
C
0.15  
D
2.90  
E
1.60  
e
1.90(TYP)  
0.95  
e1  
H
-----  
-----  
-----  
2.80  
3.00  
-----  
0.102  
0.015  
1°  
0.118  
-----  
L
------  
5°  
θ1  
9°  
5°  
9°  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
12  
Global Mixed-mode Technology Inc.  
G916  
C
D
L
H
E
θ1  
e1  
e
A
A2  
A1  
b
SOT-23-5 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  
DIMENSION IN MM  
SYMBOL  
DIMENSION IN INCH  
MIN.  
1.00  
0.00  
0.70  
0.35  
0.10  
2.70  
1.40  
-----  
NOM.  
1.10  
MAX.  
1.30  
0.10  
0.90  
0.50  
0.25  
3.10  
1.80  
-----  
MIN.  
0.039  
0.000  
0.028  
0.014  
0.004  
0.106  
0.055  
-----  
NOM.  
0.043  
-----  
MAX.  
0.051  
0.004  
0.035  
0.020  
0.010  
0.122  
0.071  
-----  
A
A1  
A2  
b
-----  
0.80  
0.031  
0.016  
0.006  
0.114  
0.063  
0.075(TYP)  
0.037  
0.110  
-----  
0.40  
C
0.15  
D
2.90  
E
1.60  
e
1.90(TYP)  
0.95  
e1  
H
-----  
-----  
-----  
-----  
2.60  
0.37  
1°  
2.80  
3.00  
-----  
0.102  
0.015  
1°  
0.118  
-----  
L
------  
θ1  
5°  
9°  
5°  
9°  
Taping Specification  
PACKAGE  
TSOT-23-5  
SOT-23-5  
QTY/REEL  
3,000 ea  
3,000 ea  
Feed Direction  
TSOT-23-5SOT-23-5 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.  
TEL: 886-3-5788833  
http://www.gmt.com.tw  
Ver: 1.7  
Jan 25, 2006  
13  

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