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Power Management
GM1117
A
MICROELECTRONICS
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
Features
Description
GM1117 of positive adjustable and fixed regulators is de-
Adjustable or Fixed Output
signed to provide 1.0A output with low dropout voltage per-
Output Current of 1.0A
formance. On-chip trimming adjusts the reference voltage
Dropout Voltage (Typical) 1.15V @ 1.0A
to 1%. For usage on working in post regulators or micro-
Line Regulation 0.2% max.
processor power supplies, low voltage operation and fast
Load Regulation 0.4% max.
transient response are required.
Fast Transient Response
Pin-to-pin compatible with the LT1086 family of regulators,
Current Limit Protection
GM1117 is available in surface-mount SOT-223 and TO-
Thermal Shutdown Protection
252 packages.
Application
High Efficiency Linear Regulators
Hard Drive Controllers
Post Regulators for Switching Supplies
Battery Chargers
Microprocessor Supply
Adjustable Power Supply
TYPICAL APPLICATION CIRCUITS
(Adjustable Version)
GM1117-Adj
3
ADJ
+
VOUT= 3.45V
VOUT 2
VIN
1
C1
10µF
Tant
VOUT= VREF X (1 +
R1
133W
1.0%
R2
232W
1.0%
VIN> 4.75V
3
VIN
GM1117-3.3
VOUT 2
VOUT= 3.3V
GND
+
C2
10µF
Tant. Min
+
1
C1
10µF
Tant
+
C2
10µF
Tant. Min
GM1117 V0.1
VIN> 4.75V
(Fixed Version)
R2
) + IADJ X R2
R1
Notes:
1. C1 needed if device is far from filter capacitors
2. C2 minimum value required for stability
www.gammamicro.com
1
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Power Management
GM1117
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MICROELECTRONICS
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
MARKING INFORMATION & PIN CONFIGURATIONS (Top View)
TO-252 (DPAK)
2
TO-220
TO-263-2 (D PAK)
SOT-223
GM1117
VVAYWW
GM1117
VVAYWW
GM1117
GM1117
VVAYWW
VVAYWW
VIN
VOUT
ADJ/GND*
VIN
VOUT
ADJ/ GND*
VIN
VOUT
VIN
VOUT
ADJ/ GND*
ADJ/ GND*
V V/VVV
A
Y
WW
On fixed versions Pin 1 = GND,
on adjustable versions Pin 1 = ADJ
Tab = VOUT
= Output Voltage (50 = 5.0V, 285= 2.85V ,A =Adj )
= Assembly Location
= Year
= Weekly
ORDERING INFORMATION
Output Voltage
Package
Shipping
GM1117-AST3T
Adj
SOT-223
80 Units / Tube
GM1117-AST3R
Adj
SOT-223
2,500 Units / Tape & Reel
GM1117-ATC3T
Adj
TO-252
80 Units / Tube
GM1117-ATC3R
Adj
TO-252
2,500 Units / Tape & Reel
GM1117-ATB3T
Adj
TO-220
50 Units / Tube
GM1117-ATA3T
Adj
TO-263
50 Units / Tube
GM1117-ATA3R
Adj
TO-263
800 Units / Tape & Reel
GM1117-1.5ST3T
1.5
SOT-223
80 Units / Tube
GM1117-1.5ST3R
1.5
SOT-223
2,500 Units / Tape & Reel
GM1117-1.5TC3T
1.5
TO-252
80 Units / Tube
GM1117-1.5TC3R
1.5
TO-252
2,500 Units / Tape & Reel
GM1117-1.5TB3T
1.5
TO-220
50 Units / Tube
GM1117-1.5TA3T
1.5
TO-263
50 Units / Tube
800 Units / Tape & Reel
GM1117
Ordering Number
2
GM1117-1.5TA3R
1.5
TO-263
GM1117-1.8ST3T
1.8
SOT-223
80 Units / Tube
2,500 Units / Tape & Reel
GM1117-1.8ST3R
1.8
SOT-223
GM1117-1.8TC3T
1.8
TO-252
80 Units / Tube
2,500 Units / Tape & Reel
GM1117-1.8TC3R
1.8
TO-252
GM1117-1.8TB3T
1.8
TO-220
50 Units / Tube
GM1117-1.8TA3T
1.8
TO-263
50 Units / Tube
GM1117-1.8TA3R
1.8
TO-263
800 Units / Tape & Reel
* For detail Ordering Number identification, please see last page.
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Power Management
GM1117
A
MICROELECTRONICS
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
Output Voltage
Package
Shipping
GM1117-2.5ST3T
2.5
SOT-223
80 Units / Tube
GM1117- 2.5 ST3R
2.5
SOT-223
2,500 Units / Tape & Reel
GM1117-2.5TC3T
2.5
TO-252
80 Units / Tube
2,500 Units / Tape & Reel
Ordering Number
GM1117-2.5TC3R
2.5
TO-252
GM1117-2.5TB3T
2.5
TO-220
50 Units / Tube
GM1117-2.5TA3T
2.5
TO-263
50 Units / Tube
GM1117-2.5TA3R
2.5
TO-263
800 Units / Tape & Reel
GM1117-2.85ST3T
2.85
SOT-223
80 Units / Tube
GM1117- 2.85 ST3R
2.85
SOT-223
2,500 Units / Tape & Reel
GM1117-2.85TC3T
2.85
TO-252
80 Units / Tube
GM1117-2.85TC3R
2.85
TO-252
2,500 Units / Tape & Reel
GM1117-2.85TB3T
2.85
TO-220
50 Units / Tube
GM1117-2.85TA3T
2.85
TO-263
50 Units / Tube
GM1117-2.85TA3R
2.85
TO-263
800 Units / Tape & Reel
GM1117-3.0ST3T
3.0
SOT-223
80 Units / Tube
GM1117- 3.0 ST3R
3.0
SOT-223
2,500 Units / Tape & Reel
GM1117-3.0TC3T
3.0
TO-252
80 Units / Tube
GM1117-3.0TC3R
3.0
TO-252
2,500 Units / Tape & Reel
GM1117-3.0TB3T
3.0
TO-220
50 Units / Tube
GM1117-3.0TA3T
3.0
TO-263
50 Units / Tube
GM1117-3.0TA3R
3.0
TO-263
800 Units / Tape & Reel
GM1117- 3.3 ST3T
3.3
SOT-223
80 Units / Tube
GM1117- 3.3 ST3R
3.3
SOT-223
2,500 Units / Tape & Reel
GM1117-3.3TC3T
3.3
TO-252
80 Units / Tube
GM1117-3.3TC3R
3.3
TO-252
2,500 Units / Tape & Reel
GM1117-3.3TB3T
3.3
TO-220
50 Units / Tube
GM1117-3.3TA3T
3.3
TO-263
50 Units / Tube
GM1117-3.3TA3R
3.3
TO-263
800 Units / Tape & Reel
GM1117-5.0ST3T
5.0
SOT-223
80 Units / Tube
GM1117- 5.0 ST3R
5.0
SOT-223
2,500 Units / Tape & Reel
GM1117-5.0TC3T
5.0
TO-252
80 Units / Tube
GM1117-5.0TC3R
5.0
TO-252
2,500 Units / Tape & Reel
GM1117-5.0TB3T
5.0
TO-220
50 Units / Tube
GM1117-5.0TA3T
5.0
TO-263
50 Units / Tube
GM1117-5.0TA3R
5.0
TO-263
800 Units / Tape & Reel
* For detail Ordering Number identification, please see last page.
GM1117
ORDERING INFORMATION (Continued)
3
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Power Management
GM1117
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MICROELECTRONICS
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VALUE
UNIT
Power Dissipation
PD
Internally limited
W
Input Voltage
VIN
7.0
V
TLEAD
300
°C
TJ
0 to 125
0 to 150
°C
Storage Temperature Range
TSTG
-65 to + 150
°C
Thermal Characteristics
SOT-223
Thermal Resistance, Junction-to-Case
DPAK
Thermal Resistance, Junction-to-Case
2
D PAK
Thermal Resistance, Junction-to-Case
RqJC
Lead Temperature(Soldering, 10sec)
Operating Junction Temperature Range
Control Section
Power Transistor
15
°C/ W
6.0
3.0
BLOCK DIAGRAM
(Fixed Version)
VOUT
VIN
Thermal
Shutdown
Error
Amplifier
-
Output
Current
Limit
+
Bandgap
Reference
GND
(Adjustable Version)
GM1117
VOUT
4
VIN
Thermal
Shutdown
Error
Amplifier
-
Bandgap
Reference
Output
Current
Limit
+
ADJ
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Power Management
GM1117
A
MICROELECTRONICS
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
ELECTRICAL CHARACTERISTICS
(Typicals and limits appearing in normal type apply for TJ = 25°C)
Symbol
Reference Voltage
GM1117-Adj
VREF
GM1117-1.8
VO
GM1117-3.3
Load Regulation
0 IOUT 1.0A, 4V VIN 7V
IOUT=10mA, VIN=4.8V
0 IOUT 1.0A, 4.8V VIN 7V
IOUT=10mA, VIN=6.5V
GM1117-5.0
Line Regulation
10mA IOUT 1.0A, 2.65V VIN 7V
IOUT=10mA, VIN=3.3V
0 IOUT 1.0A, 3.3V VIN 7V
IOUT=10mA, VIN=4V
GM1117-2.5
Output Voltage
Condition
IOUT=10mA, VIN= 5V
0
IOUT 1.0A, 6.5V VIN 7V
GM1117-Adj
IOUT=10mA, 2.75V
GM1117-1.8
IOUT=10mA, 3.3V
GM1117-2.5
REGLINE
IOUT=10mA, 4V
VIN
Max
1.262
1.275
1.818
1.836
2.525
2.550
3.333
3.366
5.050
5.100
0.04
0.20
0.04
0.20
0.04
0.20
7V
7V
7V
IOUT=10mA, 4.8V
VIN
7V
0.04
0.20
GM1117-5.0
IOUT=10mA, 6.5V
VIN
7V
0.04
0.20
GM1117-Adj
VIN-VOUT=1.5V, 10mA IO
0.20
0.40
GM1117-1.8
VIN=3.3V, 10mA IO
1.0A
0.20
0.40
VIN=4.0V, 10mA IO
1.0A
0.20
0.40
GM1117-3.3
VIN=4.8V, 10mA IO
1.0A
0.20
0.40
GM1117-5.0
VIN=6.5V, 10mA IO
1.0A
0.20
0.40
1.15
1.3
GM1117-2.5
REGLOAD
VD
IOUT=1.0A
Current Limit
ICL
VIN-VOUT=3V
GM1117-Adj
IO MIN
1.0A
1.1
VIN=5V
3.1
3
7
1.0A
7
13
VIN=4.0V, 10mA IO
1.0A
7
13
GM1117-3.3
VIN=4.8V, 10mA IO
1.0A
7
13
GM1117-5.0
VIN=6.5V, 10mA IO
1.0A
7
13
IOUT=10mA, 2.75V
VIN
55
90
GM1117-2.5
Quiescent Current
GM1117-Adj
IQ
IADJ
Temp. Coefficient
Unit
V
V
V
V
V
%
%
V
A
VIN=3.3V, 10mA IO
GM1117-1.8
Adjust Pin Current
VIN
Typ
1.250
1.250
1.800
1.800
2.500
2.500
3.300
3.300
5.000
5.000
GM1117-3.3
Dropout Voltage
Minimum Load Current
VIN
Min
1.238
1.225
1.782
1.764
2.475
2.450
3.267
3.234
4.950
4.900
mA
mA
7V
µA
VIN-VOUT=1.5V, IOUT=10mA
0.005
%/°C
0.003
%/W
72
dB
Thermal Regulation
TC
TA=25°C, 30ms pulse
Ripple Rejection
RA
VIN-VOUT=1.5V, IOUT=1.0A
60
GM1117
Parameter
5
A
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MICROELECTRONICS
Power Management
GM1117
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
APPLICATION INFORMATION
GM1117
VIN
VIN
GM1117 linear regulators provide fixed and adjustable
C1
VOUT
VOUT
VREF
Adj
R1
C2
output voltages at currents up to 1.0A. These regulators are protected against overcurrent conditions and in-
IAdj
clude thermal shutdown protection. The GM1117's
CAdj
have a composite PNP-NPN output transistor and re-
R2
quire an output capacitor for stability. A detailed procedure for selecting this capacitor follows.
Figure 1. Resistor Divider Scheme
Adjustable Operation
Stability Considerations
The GM1117 has an output voltage range of 1.25 V to
The output compensation capacitor helps to deter-
5.5 V. An external resistor divider sets the output volt-
mine three main characteristics of a linear regula-
age as shown in Figure 1. The regulator maintains a
tor's performance: start-up delay, load transient re-
fixed 1.25V (typical) reference between the output pin
sponse, and loop stability. The capacitor value and
and the adjust pin.
type is based on cost, availability, size and temperature constraints. A tantalum or aluminum electrolytic
A resistor divider network R1 and R2 causes a
capacitor is preferred, as a film or ceramic capacitor
fixed current to flow to ground. This current
with almost zero ESR can cause instability. An alu-
creates a voltage across R2 that adds to the 1.25 V
minum electrolytic capacitor is the least expensive
across R1 and sets the overall output voltage. The
type, but when the circuit operates at low tempera-
adjust pin current (typically 50 µA) also flows
tures, both the value and ESR of the capacitor will
through R2 and adds a small error that should be
vary widely. For optimum performance over the full
taken into account if precise adjustment of VOUT is
operating temperature range, a tantalum capacitor is
necessary.
best. A 22µF tantalum capacitor will work fine in
The output voltage is set according to the formula:
most applications, but with high current regulators
such as the GM1117 higher capacitance values will
R1 + R2
VOUT = VREF X (
) + IAdj X R2
R1
The term IAdj × R2 represents the error added by the
adjust pin current.
R1 is chosen so that the minimum load current is at
least 2.0 mA. R1 and R2 should be the same type,
e.g. metal film for best tracking over temperature.
While not required, a bypass capacitor from the
adjust pin to ground will improve ripple rejection
and transient response. A 0.1 µF tantalum
capacitor is recommended for “first cut” design.
Type and value may be varied to obtain optimum
performance vs. price.
improve the transient response and stability. Most applications for the GM1117's involve large changes in
load current, so the output capacitor must supply instantaneous load current. The ESR of the output capacitor causes an immediate drop in output voltage
given by:
DV = DI x ESR
In microprocessor applications an output capacitor
network of several tantalum and ceramic capacitors
in parallel is commonly used. This reduces overall
ESR and minimizes the instantaneous output voltage drop under transient load conditions. The output
capacitor network should be placed as close to the
load as possible for the best results.
Used with large output capacitance values and the
input voltage is instantaneously shorted to ground,
damage can occur. In this case, a diode connected
GM1117
as shown above in Figure 1.
6
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Power Management
GM1117
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MICROELECTRONICS
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
Protection Diodes
Output Voltage Sensing
When large external capacitors are used with most
The GM1117 are three terminal regulators. For which,
linear regulator, it is wise to add protection diodes. If
they cannot provide true remote load sensing. Load
the input voltage of the regulator is shorted, the out-
regulation is limited by the resistance of the conductors
put capacitor will discharge into the output of the regulator. The discharge current depends on the value
of capacitor, output voltage, and rate at which VIN
connecting the regulator to the load. For best results
the GM1117 should be connected are as shown in
Figure 3.
drops.
Figure 2
VIN
(a),(b)
Protection Diode Scheme for
Large Output Capacitors
VIN
VOUT
RC
Conductor
Parasitic
Resistance
GM1117-3.3
RLOAD
GND
(a) Fixed Version
(a) Fixed Version
IN4002
VIN
VIN
VOUT
VOUT
VIN
GM1117-3.3
VOUT
RC
Conductor
Parasitic
Resistance
GM1117-Adj
GND
C1
VIN
C2
ADJ
R1
RLOAD
R2
(b) Adjustable Version
(b) Adjustable Version
Figure 3 (a),(b) Conductor Parasitic Resistance Effects are
Minimized by this Grounding Scheme For Fixed
and Adjustable Output Regulators
IN4002
VIN
VIN
VOUT
VOUT
GM1117-Adj
C1
ADJ
R1
C2
Calculating Power Dissipation and Heat
Sink Requirements
CADJ
R2
The GM1117 precision linear regulators include thermal
shutdown and current limit circuitry to protect the de-
is through a large junction, and protection diodes are
normally not needed. However, damage can occur if
vices. However, high power regulators normally operate at high junction temperatures. It is important to calculate the power dissipation and junction temperatures
the regulator is used with large output capacitance
accurately to be sure that you use and adequate heat
values and the input voltage is instantaneously
sink. The case is connected to VOUT on the GM1117,
shorted to ground. In this case, a diode connected
and electrical isolation may be required for some appli-
as shown above in Figure 2.
cations. Thermal compound should always be used
with high current regulators like the GM1117.
GM1117
In the GM1117 linear regulators, the discharge path
7
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Power Management
GM1117
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MICROELECTRONICS
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
The thermal characteristics of an IC depend four factors:
1. Maximum Ambient Temperature TA (°C)
2. Power Dissipation PD (Watts)
3. Maximum Junction Temperature TJ (°C)
4. Thermal Resistance Junction to ambient RQJA
(°C/W)
The relationship of these four factors is expressed by
equation (1):
TJ = TA + PD X RQJA ........(1)
Maximum ambient temperature and power dissipation are determined by the design while the maximum
junction temperature and thermal resistance depend
on the manufacturer and the package type.
The maximum power dissipation for a regulator is expressed by equation (2):
PD(max) = { VIN(max)- VOUT(min) } IOUT(max) + VIN(max)IQ ........(2)
where:
VIN(max) is the maximum input voltage,
VOUT(min) is the minimum output voltage,
IOUT(max) is the maximum output current
IQ is the maximum quiescent current at IOUT(max).
A heat sink effectively increases the surface area of
the package to improve the flow of heat away from
the IC into the air. Each material in the heat flow path
between the IC and the environment has a thermal resistance. Like series electrical resistances, these re-
,
sistance are summed to determine RQJA the total
thermal resistance between the junction and the air.
This is expressed by equation (3):
RQJA = RQJC + RQ CS+ R QSA ........(3)
GM1117
Where all of the following are in °C/W:
RQJC is thermal resistance of junction to case,
RQCS is thermal resistance of case to heat sink,
RQSA is thermal resistance of heat sink to ambient air
8
The value for RQJA is calculated using equation (3)
and the result can be substituted in equation (1). The
value for RQJC is 3.5°C/W for a given package type
based on an average die size. For a high current regulator such as the GM1117 the majority of the heat is
generated in the power transistor section.
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Power Management
GM1117
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MICROELECTRONICS
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
Typical Performance Characteristics
1.00
0.10
TCASE = 0°C
0.08
Output Voltage Deviation (%)
0.95
TCASE = 25°C
VDROPOUT
0.90
0.85
TCASE = 125°C
0.80
0.06
0.04
0.02
0.00
-0.02
-0.04
-0.06
-0.08
-0.10
0.75
0
200
400
600
800
1000
-0.12
0
10 20 30 40 50 60 70 80 90 100 110 120 130
IOUT(mA)
Figure 4. Reference Voltage vs. Temperature
70
85
75
IO = 10mA
Ripple Rejection(dB)
65
Adjust Pin Current(µA)
TJ (°C)
Figure 3. Dropout Voltage vs. Output Current
60
55
50
45
40
0 10
65
55
45
TCASE = 25°C
IOUT = 1.0A
(VIN - VOUT) = 3.0V
25 VRIPPLE = 1.0VP-P
Cadj =0.1µF
35
15
101
20 30 40 50 60 70 80 90 100 110 120 130
Temperature (°C)
103
104
105
106
Frequency(Hz)
Figure 5. Adjust Pin Current vs. Temperature
Figure 6. Ripple Rejection vs. Frequency
300
3.5
200
3.3
3.1
100
2.9
0
ISC (A)
VOUT = 3.3V
COUT = CIN = 22µF Tantalum
CAdj =0.1µF
-100
-200
2.5
2.3
2.1
1000
1.9
500
0
0
2.7
1.7
1
2
3
4
5
6
7
8
Time(µS)
Figure 7. Transient Response
9
10
1.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
VIN - VOUT(V)
Figure 8. Short Circuit Current vs. VIN-VOUT
GM1117
Load Step(mA) Voltage Deviation(mV)
102
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Power Management
GM1117
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MICROELECTRONICS
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
TO-252-3 PACKAGE OUTLINE DIMENSIONS
6.50 ± 0.05
2.30 ± 0.05
5.340 ± 0.05
Pad Layout
0.508 ± 0.0127
29° ± 0.5°
REF 0.6
7°
0.244
6.20
1.0 ± 0.05
0.118
3.0
6.10 ± 0.05
0.070 ± 0.05
7.20 ± 0.05
9.900
7°
7°
0.75 ± 0.10
0.243
6.172
0.228
5.80
0.75 ± 0.10
2.70 ± 0.10
0.89 ± 0.05
1.525 ± 0.10
R 0.25 ± 0.13
0.81 ± 0.038
0.101
2.58
0.063
1.6
(
Inches
)
mm
Unit: mm
R0.15 max
2°
SOT- 223 PACKAGE OUTLINE DIMENSIONS
1.80max
0.3 ± 0.05
3.0 ± 0.05
1.75 ± 0.10
0.65 ± 0.10
0.60
0.06 ± 0.04
3.5 ± 0.10
Pad Layout
0.15
3.8
7.0 ± 0.15
0.079
2.0
1.75 ± 0.10
0~0.075
0~10°
2.30TYP
GM1117
0.95TYP
10
4.6 ± 0.1
0.091
2.3
0.70 ± 0.05
0.248
6.3
0.091
2.3
0.079
2.0
13°
0.059
1.5
0.84
1.6 ± 0.10
0.46
13°
Unit: mm
6.50 ± 0.10
0.059
1.5
0.059
1.5
Inches
mm
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Power Management
GM1117
A
MICROELECTRONICS
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
TO-220 PACKAGE OUTLINE DIMENSIONS
4.50 ± 0.20
9.90 ± 0.20
3.60 ± 0.20
8.0
8.70
2.80 ± 0.10
7.0
+0.1
1.30 -0.05
4.60
8.40
3°
45°
3.00
1.27 ± 0.10
3°
3°
3-R0.2
+0.1
0.80 ± 0.10
1.52 ± 0.10
2.54 TYP
(2.54 ± 0.20)
0.9
7.0
10.08 ± 0.30
13.08 ± 0.20
1.46
1.00
3°
18.95 MAX
3.70 ± 0.20
15.90 ± 0.20
1.50 DP0.20
9.20 ± 0.20
1.30 ± 0.10
1.70
0.50 -0.05
2.40 ± 0.20
3°
2 - R 0.3
Unit: mm
10.00 ± 0.20
TO-263-2 PACKAGE OUTLINE DIMENSIONS
9.90 ± 0.20
4.50 ± 0.20
+0.1
1.30 -0.05
15°
0.40
1.20
Pad Layout
3°
1.50 DP0.20
0.63
17.02
0.33
8.38
9.20 ± 0.20
15.3 ± 0.20
0.10 ± 0.01
3°
3°
1.4 ± 0.20
R0.30
2.40 ± 0.20
2.00 ± 0.10
4.90 ± 0.20
2.54 ± 0.10
0.75
R0.30
0.90 ± 0.10
1.27 ± 0.10
2.54 TYP
(2.54 ± 0.20)
0.12
3.05
0.42
10.66
0.24
6.096
+0.1
0.50 -0.05
0.04
1.016
10.0 ± 0.20
7.0
4.0
3°
3°
(
R 0.3
R 0.45
7.2
9.20 ± 0.20
10.00 ± 0.20
4.90 ± 0.20
Unit: mm
Inches
)
mm
GM1117
0.40
0.90
11
A
A
MICROELECTRONICS
Power Management
GM1117
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
ORDERING NUMBER
GM 1117 A ST3 R
Gamma Micro.
Shipping
R: Tape & Reel
T: Tube
Circuit Type
GM1117
Output Voltage
A: Adj, 1.5: 1.5V
1.8: 1.8V, 2.5: 2.5V
2.85: 2.85V, 3.0: 3.0V
3.3: 3.3V, 5.0: 5.0V
12
Package
TC3: TO-252
TB3: TO-220
TA3: TO-263-2
ST3: SOT-223
A
1.0A LOW DROPOUT PRECISION LINEAR REGULATORS
GM1117
A
MICROELECTRONICS
Power Management
GM1117
13