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GM7110-5.0TA5T [GAMMA]

1A STEP-DOWN VOLTAGE SWITCHING REGULATOR; 1A降压开关稳压器
GM7110-5.0TA5T
型号： GM7110-5.0TA5T
厂家： GAMMA MICROELECTRONICS INC.    GAMMA MICROELECTRONICS INC.
描述：

1A STEP-DOWN VOLTAGE SWITCHING REGULATOR
1A降压开关稳压器

稳压器 开关
文件： 总12页 (文件大小：214K)
中文：  中文翻译
下载：  下载PDF数据表文档文件
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Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
Features  
Description  
3.3V, 5V, 12V, 15V andAdjustable output  
versions  
GM7110 of regulators provides all the active functions  
for a step-  
down (buck) switching regulator, and drives  
line and load regulation.  
1A load with excellent  
GM7110 is available in fixed output volt ages of 3.3V,  
5V, 12V, 15V and versatile Adjustable output  
Adjustable version output voltage range  
a
1.23V to 37V ±4% max over line and load  
conditions  
version. These regulators are simple to use and require  
a minimum number of external components.  
1A output current  
Features include internal frequency compensation and  
Requires Only 4 External Components  
High Efficiency  
TTL shutdown capability and low power  
standby mode  
Thermal shutdown, current limit protection  
Uses standard inductors  
a fixed- frequency oscillator. GM7110 high-efficiency  
replacement for popular three-terminal linear regulators,  
and is requiring a smaller heat sink or even no heat sink.  
GM7110 performs well with standard inductors from  
several manufacturers, and simplifying the design of  
switch-mode power supplies. GM7110 guarantees ±4%  
tolerance on output voltage within specified input voltages  
and output load conditions, and ±10% on the oscillator  
frequency.  
52 kHz fixed frequency internal oscillator  
External shutdown is included with 50 uA(typical)  
standby current. The output switch has cycle-by-cycle  
current limiting as well as thermal shutdown for full  
protection under fault conditions.  
Application  
Pre-regulator for linear regulators  
On-card/ board switching regulators  
High-efficiency step-down buck regulator  
Positive to negative converter (buck-boost)  
TYPICAL APPLICATION  
Feedback  
7V - 40V  
Unregulated  
DC Input  
4
+V  
IN  
GM7110-5.0  
L1  
5.0V, 1A  
1
Output  
2
Regulated  
Output  
C
+
IN  
+
330 µH  
C
OUT  
3 GND  
5
ON / OFF  
100 µF  
330 µF  
D1  
1N5819  
www.gammamicro.com  
1
Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
MARKING INFORMATION & PIN CONFIGURATIONS  
2
TO-220- 5  
TO-220- 5B  
TO-252-5 (DPAK)  
TO-263-5(D PAK)  
GM7110  
VVAYWW  
GM7110  
VVAYWW  
GM7110  
VVAYWW  
GM7110  
VVAYWW  
V
IN  
Output  
ON/OFF  
Feedback  
V
V
V
IN  
Output  
Ground  
IN  
IN  
Ground  
Output  
ON/OFF  
Feedback  
ON/OFF  
Feedback  
Output  
Ground  
ON/OFF  
Feedback  
Ground  
V V, VVV = Output Voltage (33=3.3V , 120=12V,A=Adj)  
A
= Assembly Location  
= Year  
1
2 3 4 5  
Y
W W  
= Weekly  
ORDERING INFORMATION  
Ordering Number  
Output Voltage  
Package  
Shipping  
A d j  
A d j  
A d j  
A d j  
3.3  
3.3  
3.3  
3.3  
5.0  
5.0  
5.0  
5.0  
5.0  
5.0  
12  
GM7110-ATB5T  
GM7110-ATB5BT  
GM7110-ATA5R  
GM7110-ATA5T  
TO-220-5  
TO-220-5B  
TO-263-5  
TO-263-5  
TO-220-5  
TO-220-5B  
TO-263-5  
TO-263-5  
TO-220-5  
TO-220-5B  
TO-263-5  
TO-263-5  
TO-252-5  
TO-252-5  
TO-220-5  
TO-220-5B  
TO-263-5  
TO-263-5  
TO-220-5  
TO-220-5B  
TO-263-5  
TO-263-5  
50 Units / Tube  
50 Units / Tube  
800 Units/ Tape & Reel  
50 Units / Tube  
50 Units / Tube  
GM7110-3.3TB5T  
GM7110-3.3TB5BT  
GM7110-3.3TA5R  
GM7110-3.3TA5T  
GM7110-5.0TB5T  
GM7110-5.0TB5BT  
GM7110-5.0TA5R  
GM7110-5.0TA5T  
GM7110-5.0TC5T  
GM7110-5.0TC5R  
GM7110-12TB5T  
GM7110-12TB5BT  
GM7110-12TA5R  
GM7110-12TA5T  
GM7110-15TB5T  
GM7110-15TB5BT  
GM7110-15TA5R  
GM7110-15TA5T  
50 Units / Tube  
800 Units/ Tape & Reel  
50 Units / Tube  
50 Units / Tube  
50 Units / Tube  
800 Units/ Tape & Reel  
50 Units / Tube  
80 Units/ Tube  
2,500 Units/ Tape & Reel  
50 Units / Tube  
50 Units / Tube  
12  
800 Units/ Tape & Reel  
12  
12  
50 Units / Tube  
50 Units / Tube  
15  
15  
50 Units / Tube  
800 Units/ Tape & Reel  
15  
15  
50 Units / Tube  
* TB5B: Bent and Staggered Leads of TO-220 package  
** For detail Ordering Number identification, please see last page.  
2
Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
ABSOLUTE MAXIMUM RATINGS  
PARAMETER  
VALUE  
UNIT  
Maximum Supply Voltage  
45  
V
V
-0.3  
V V  
IN  
ON/OFF Pin Input Voltage  
Output Voltage to Ground (Steady State)  
-1.0  
V
-
Power Dissipation  
Internally Limited  
-65 to + 150  
+150  
Storage Temperature Range  
Maximum Junction Temperature  
Lead Temperature (Soldering, 10 sec.)  
°C  
°C  
°C  
+260  
RECOMMENDED OPERATING CONDITIONS  
PARAMETER  
VALUE  
UNIT  
-40  
T
J
125  
Temperature Range  
°C  
Supply Voltage  
40  
V
BLOCK DIAGRAM  
Unregulated  
V
IN  
DC Input  
ON/OFF  
Internal  
Regulator  
ON/OFF  
1
4
5
+
C
IN  
Feed-  
back  
R2  
Fixed Gain  
Error AMP  
Comparator  
1 AMP  
Switch  
+
-
+
-
1.0K  
R1  
Output  
Driver  
L1  
V
OUT  
2
D1  
+
1.23V  
L
Band-Gap  
Reference  
52kHz  
Oscillator  
Thermal  
Shutdown  
C
Current  
Limit  
O
A
D
out  
Reset  
3
GND  
V
OUT  
3.3V, R2 = 1.7K  
5V, R2 = 3.1K  
12V, R2 = 8.84K  
15V, R2 = 11.3K  
For ADJ. Version  
R1 = Open, R2 = 0W  
3
Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
ELECTRICAL CHARACTERISTICS: GM7110-3.3  
(Specifications with standard type face are for T = 25°C, and those with boldface type apply over full Operating Temperature Range)  
J
Conditions  
Parameter  
Unit  
Symbol  
Min  
Typ  
Max  
Output Voltage  
Output Voltage  
Efficiency  
V
IN  
= 12V, I  
= 0.2A  
V
3.234  
3.3  
3.3  
75  
3.366  
V
V
LOAD  
OUT  
4.75V  
V
40V, 0.2A  
I
1A  
V
3.168/3.135  
3.432/3.465  
IN  
LOAD  
OUT  
h
-
-
V
IN  
= 12V, I  
= 1A  
%
LOAD  
ELECTRICAL CHARACTERISTICS: GM7110-5.0  
(Specifications with standard type face are for T = 25°C, and those with boldface type apply over full Operating Temperature Range)  
J
Conditions  
Parameter  
Unit  
Symbol  
Min  
Typ  
Max  
Output Voltage  
Output Voltage  
Efficiency  
V
IN  
= 12V, I  
= 0.2A  
V
4.900  
5.0  
5.0  
77  
5.100  
V
V
LOAD  
OUT  
8V  
V
40V, 0.2A  
I
1A  
V
4.800/4.750  
5.200/5.250  
IN  
LOAD  
OUT  
h
-
-
V
IN  
= 12V, I  
= 1A  
%
LOAD  
ELECTRICAL CHARACTERISTICS: GM7110-12  
(Specifications with standard type face are for T = 25°C, and those with boldface type apply over full Operating Temperature Range)  
J
Conditions  
Parameter  
Unit  
Symbol  
Min  
Typ  
Max  
Output Voltage  
Output Voltage  
Efficiency  
V
IN  
= 25V, I  
= 0.2A  
V
11.76  
12.0  
12.0  
88  
12.24  
V
V
LOAD  
OUT  
15V  
V
40V, 0.2A  
I
1A  
V
11.52/11.40  
12.48/12.60  
IN  
LOAD  
OUT  
h
-
-
V
IN  
= 15V, I  
= 1A  
%
LOAD  
ELECTRICAL CHARACTERISTICS: GM7110-15  
(Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range)  
Conditions  
Parameter  
Unit  
Symbol  
Min  
Typ  
Max  
Feedback Voltage  
Feedback Voltage  
Efficiency  
V
IN  
= 30V, I  
= 0.2A  
V
14.70  
15.0  
15.0  
88  
15.30  
V
V
LOAD  
OUT  
18V  
V
40V, 0.2A  
I
1A  
V
14.40/14.25  
15.60/15.75  
IN  
IN  
LOAD  
OUT  
h
-
-
V
= 18V, I  
= 1A  
%
LOAD  
ELECTRICAL CHARACTERISTICS: GM7110-ADJ  
(Specifications with standard type face are for T = 25°C, and those with boldface type apply over full Operating Temperature Range)  
J
Conditions  
Parameter  
Unit  
Symbol  
Min  
Typ  
Max  
Feedback Voltage  
V
= 12V, I  
= 0.2A, V  
= 5V  
V
1.217  
1.230  
1.243  
V
IN  
LOAD  
OUT  
OUT  
8V  
V
40V, 0.2A  
V = 5V  
OUT  
I
1A  
IN  
LOAD  
Feedback Voltage  
V
1.193/1.180  
1.230  
1.267/1.280  
V
OUT  
h
-
-
V
IN  
= 12V, I  
= 1.0A, V =5V  
OUT  
Efficiency  
77  
%
LOAD  
4
Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
ELECTRICAL CHARACTERISTICS: All Output Voltage Versions  
(Specifications with standard type face are for T = 25°C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise  
J
specified, V = 12V for the 3.3V, 5.0V andADJ version, V = 25V for 12V version. and V = 30V for 15V version. I = 500 mA)  
LOAD  
IN  
IN  
IN  
Symbol  
Typ  
Parameter  
Conditions  
= 5V (Adjustable Version Only)  
(Note 11)  
Min  
Max  
Unit  
-
V
OUT  
I
FB  
Feedback Bias Current  
Oscillator Frequency  
Saturation Voltage  
50  
52  
100 / 500  
nA  
kHz  
V
F
O
47 / 42  
58 / 63  
-
I
= 1A (Notes 4)  
V
0.9  
1.2 / 1.4  
OUT  
SAT  
-
T
DC  
Max Duty Cycle (ON)  
(Note 5)  
93  
98  
%
(Note 4, 11)  
I
CL  
Current Limit  
1.7 / 1.3  
2.2  
3.0 / 3.2  
A
-
-
-
(Notes 6, 7)  
Output = 0 V  
Output = -1V  
2
I
OL  
Output Leakage Current  
mA  
7.5  
30  
-
-
(Note 6)  
I
Q
Quiescent Current  
5
10  
mA  
Standby Quiescent Current  
I
mA  
ON/OFF Pin = 5V (OFF)  
50  
200  
STBY  
q
-
-
-
-
-
TO-220 Package, Junction to Ambient (Note 8)  
TO-220 Package, Junction to Ambient (Note 8)  
TO-220,TO-263, Package, Junction to Case  
TO-252 Package, Junction to Case  
JA  
65  
45  
2
-
-
-
-
q
JA  
q
Thermal Resistance  
°C/W  
JC  
q
6
JC  
q
TO-263 Package, Junction to Ambient (Note 10)  
37  
JA  
-
V
OUT  
=0V  
V
2.2 / 2.4  
1.4  
1.2  
12  
0
V
V
ON/OFF Pin  
IH  
V
= Nominal Output Voltage  
Logic Input Level  
V
-
-
-
OUT  
1.0 / 0.8  
IL  
V
mA  
mA  
30  
ON/OFF Pin = 5V (OFF)  
IH  
ON/OFF Pin Input Current  
I
IL  
ON/OFF Pin = 0V (ON)  
10  
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indic  
ate conditions for which the device is intended to be functional, but do not guarantee specific performance limits.  
Guaranteed specifications and Test conditions are shown in Electrical Characteristics.  
Note 2: All limits guaranteed at 25°C (standard type face) and over full operating temperature range (bold type face).  
All 25°C limits are 100% production tested. All limits over full operating temperature range are guaranteed via  
correlation using standard Statistics Quality Control methods.  
Note 3: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator  
system performance. When the GM7110 is used as shown in the Figure 2 test circuit, system performance will be  
as shown in system parameters section of Electrical Characteristics.  
Note 4: Output pin sourcing current. No diode, inductor or capacitor connected to output.  
Note 5: Feedback pin removed from output and connected to 0V.  
Note 6: Feedback pin removed from output and connected to +12V for the Adjustable, 3.3V, and 5V versions, and +25V for  
the 12V and 15V versions, to force the output transistor OFF.  
Note 7: V = 40V  
IN  
Note 8: Junction to ambient thermal resistance (no external heat sink) for the 5 lead TO-220 package mounted vertically,  
with ½ inch leads in a socket, or on a PC board with minimum copper area.  
Note 9: Junction to ambient thermal resistance (no external heat sink) for the 5 lead TO-220 package mounted vertically,  
with ¼ inch leads soldered to a PC board containing approximately 4 square inches of copper area surrounding  
the leads.  
Note 10: If the TO-263 package is used, the thermal resistance can be reduced by increasing the PC board Copper area  
thermally connected to the package. Using 0.5 square inches of copper area, q is 50°C//W, with 1 square inch  
JA  
of copper area, q is 37°C/W, and with 1.6 or more square inches of copper area, q is 32°C/W.  
JA  
JA  
Note 11: The oscillator frequency reduces to approximately 11 kHz in the event of an output short or an Overload which  
causes the regulated output voltage to drop approximately 40% from the nominal output voltage. This self-  
protection feature lowers the Average power dissipation of Gm7110 By lowering the minimum duty cycle from  
5% down to approximately 2%.  
5
Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
TEST CIRCUIT AND LAYOUT GUIDELINES  
Careful layout is important with any switching regulator. Rapidly switching currents associated with wiring  
inductance generate voltage transients, which can cause problems. To minimize inductance and ground loops,  
the lengths of the leads indicated by heavy lines in Figure 1 below should be kept as short as possible. Single-  
point grounding (as indicated in Figure 1) or ground plane construction should be used for best results. When  
using the Adjustable version, place the programming resistors as close as possible to GM7110, to keep the  
sensitive feedback wiring short.  
Figure 1(a). Fixed Output Voltage Versions  
Feedback  
4
GM 7110  
+V  
IN  
FIXED OUTPUT  
L1  
1
VOUT  
Output  
2
330 µH  
GND 3  
ON/OFF 5  
V
IN  
+
+
L
Unregulated  
DC Input  
D1  
MBR360  
C
O
A
D
IN  
100 µF  
C
OUT  
330 µF  
C - 100 µF, 75V,Aluminum Electrolytic  
IN  
C
- 330 µF, 25V,Aluminum Electrolytic  
OUT  
D1 - Schottky, MBR360  
L1 - 330 µH, 3L Electronic Corp. TC-331M-1.0A- 5026  
R1 - 2k, 0.1%  
R2 - 6.12k, 0.1%  
6
Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
Figure 1(b).Adjustable Output Voltage Versions  
Feedback  
4
+V  
IN  
GM7110-ADJ  
L1  
V
=5.0V  
1
Output  
OUT  
2
330 µH  
ON/ OFF  
GND 3  
5
R2  
7V - 40V  
Unregulated  
DC Input  
+
L
O
A
D
+
D1  
MBR360  
C
IN  
C
100 µF  
OUT  
330 µF  
R1  
R2  
V
= V  
( 1 +  
)
OUT  
REF  
R1  
-1)  
V
OUT  
R2 = R1 (  
V
REF  
where V  
= 1.23V, R1 between 1k and 5k.  
REF  
Typical Performance Characteristics  
Figure 2. Switch Saturation Voltage  
Figure 3. Dropout Voltage  
1.2  
2.0  
1.5  
1.0  
0.5  
0
DV  
= 5%  
OUT  
R
= 0.2W  
IND  
T = - 55°C  
J
I
= 1A  
1.0  
LOAD  
T = - 25°C  
J
0.8  
T = 150°C  
J
I
= 200mA  
LOAD  
0.6  
0.4  
0
0.2  
0.4  
0.6  
0.8  
1.0  
-75 -50 -25  
0
25 50 75 100 125 150  
SWITCH CURRENT (A)  
JUNCTION TEMPERATURE (°C)  
7
Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
Typical Performance Characteristics  
Figure 5. Maximum Power Dissipation(TO-263)  
Figure 4. Quiescent Current  
20  
V
= 5V  
OUT  
Measured at  
Ground Pin  
18  
16  
14  
12  
10  
8
4
q
= 32°C/ W  
JA  
T = 25°C  
J
q
= 37°C/ W  
JA  
3
2
1
0
I
= 1A  
LOAD  
q
= 50°C/ W  
JA  
6
I
= 200mA  
q
= 73°C/ W  
LOAD  
JA  
4
0
10  
20  
30  
40  
50  
60  
0
10 20 30 40 50 60 70 80 90 100  
AMBIENT TEMPERATURE (°C)  
INPUT VOLTAGE (V)  
Figure 7. ON / OFF Pin Current (Sinking)  
Figure 6. Minimum Operating Voltage  
5.0  
4.5  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0
8
Adjustable Version Only  
V
= 40V  
IN  
7
6
5
4
3
2
1
0
-40°C  
T
J
125°C  
V
OUT  
= 1.23V  
I
= 120 mA  
LOAD  
-50 -25  
0
25 50  
75 100 125  
0
5
10  
15  
20  
25  
JUNCTION TEMPERATURE (°C)  
ON / OFF PIN VOLTAGE (V)  
8
Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
TO-220-5 PACKAGE OUTLINE DIMENSIONS  
9.97 ± 0.20  
4.50 ± 0.20  
9.90 ± 0.20  
8.0 ± 0.20  
7.0  
3.60 ± 0.20  
8.70  
+0.1  
2.80 ± 0.10  
1.30  
-0.05  
1.30 ± 0.10  
1.70  
3.70 ± 0.20  
1.50 DP0.20  
3°  
4.60  
7.0 ± 0.20  
9.20 ± 0.20  
8.40  
3°  
3°  
1.2  
3-R0.2  
5-0.8 ± 0.10  
+0.1  
0.50  
-0.05  
2.40 ± 0.20  
1.7(TYP)  
3°  
3°  
2 - R 0.3  
Unit: mm  
10.00 ± 0.20  
TO-263-5 PACKAGE OUTLINE DIMENSIONS  
9.90  
4.50  
1.30  
15°  
0.40  
1.20  
3°  
4.60  
1.50 DP0.20  
9.20  
Pad Layout  
0.10  
3°  
15.3  
17.5  
2.00  
0.75  
9
2.40  
3.8  
1.20  
R0.30  
4.90  
1.7  
R0.30  
2.54  
0.50  
10.0  
1.70 TYP  
(1.70 ± 0.20)  
0.80  
8.0  
7.0  
1.07  
0.40  
4.40  
1.75  
3°  
3°  
R 0.3  
0.90  
R 0.45  
7.2  
Units: mm  
9.20  
15.30  
10.00  
4.90  
Unit: mm  
9
Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
TO-220-5B PACKAGE OUTLINE DIMENSIONS  
0.18 ± 0.004  
4.57 ± 0.1  
0.4 ± 0.006  
0.05 ± 0.004  
10.16 ± 0.15  
1.27 ± 0.1  
0.108 ± 0.006  
0.151 ± 0.002  
2.74 ± 0.15  
3.84 ± 0.05  
0.05 ± 0.004  
1.27 ± 0.1  
0.4985 ± 0.0075  
12.66 ± 0.2  
0.358 ± 0.008  
9.1± 0.2  
0.032 ± 0.004  
0.81 ± 0.1  
0.9645 ± 0.0075  
24.5 ± 0.2  
0.996 ± 0.008  
25.3± 0.2  
0.138 ± 0.004  
3.5 ± 0.1  
0.105 ± 0.006  
2.76± 0.15  
0.1535 ± 0.0035  
3.9 ± 0.1  
0.213 ± 0.004  
5.4 ± 0.1  
0.173 ± 0.006  
4.4 ± 0.15  
0.220 TYP  
1.700 TYP  
0.0165 ± 0.0045  
0.42 ± 0.11  
0.331 ± 0.006  
8.4 ± 0.15  
0.268 ± 0.004  
0.68 ± 0.1  
Inches  
(
)
mm  
TO-252-5 PACKAGE OUTLINE DIMENSIONS  
0.256 ± 0.004  
6.5 ± 0.1  
0.212 ± 0.003  
0.024 Ref  
Pad Layout  
0.02 ± 0.001  
5.375 ± 0.075  
0.600 Ref  
0.51 ± 0.02  
29° ± 0.5°  
7
3
0.24 ± 0.004  
0.039 ± 0.002  
6.10 ± 0.1  
1.0 ± 0.05  
0.9  
0.2835 ± 0.0035  
7.20 ± 0.1  
0.39 ± 0.008  
9.9 ± 0.2  
7
3.81  
1.27  
0.025 ± 0.002  
0.06 ± 0.004  
6.25  
0.64 ± 0.05  
1.525 ± 0.1  
0.0235 ± 0.0015  
0.60 ± 0.025  
0.003 ± 0.002  
0.050BSC  
Units: mm  
0.07 ± 0.05  
1.270BSC  
0.091 ± 0.002  
2.3 ± 0.05  
Inches  
(
)
mm  
10  
Power Management  
A
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
ORDERING NUMBER  
GM 7110 A TB5 T  
Shipping  
Gamma Micro.  
R: Tape & Reel  
T: Tube  
Circuit Type  
Package  
TA5: TO-263-5  
TB5: TO-220-5  
TC5: TO-252-5  
Output Voltage  
A: Adj, 3.3: 3.3V  
5.0: 5.0V, 12: 12V  
15: 15V  
11  
Power Management  
A A  
MICROELECTRONICS  
GM7110  
1A STEP-DOWN VOLTAGE SWITCHING REGULATOR  
12  

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