AMS AMS3102

AMS3102
FEATURES
APPLICATIONS
• Fixed and Adjustable Versions Available
• Output Current in excess of 300mA
• Very Low Quiescent Current
• Reverse Battery Protection
• Input-output Differential less than 0.6V
• Short Circuit Protection
• Internal Thermal Overload Protection
• Load Dump Protection
• Overvoltage Protection
• Mirror Image Insertion Protection
• ON/OFF Pin
•External PNP Drive
• Cellular Telephones
• Portable Consumer Equipment
• Portable (Notebook) Computers
• Battery Powered Systems
• Portable Instrumentation
• Radio Control Systems
• CD/DVD drives
GENERAL DESCRIPTION
The AMS3102 series consists of positive fixed and adjustable voltage regulators ideally suited for use in battery-powered
systems. These devices feature very low quiescent current of 0.3mA or less when supplying 10mA loads. This unique
characteristic and the extremely low input-output differential required for proper regulation (0.25V for output currents of
100mA) make the AMS3102 ideal to use for standby power systems.
Internal circuitry of AMS3102 is protected from input fault conditions caused by reverse battery installation or input voltages
that exceed maximum rated input voltage. During line transients, such as load dump (40V) when the input voltage to the
regulator can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to
protect both internal circuits and the load. The AMS3102 series also includes internal current limiting, thermal shutdown, and is
able to withstand temporary power-up with mirror-image insertion.
The AMS3102 is offered in the 3-pin TO-92 package, SOT-89, 3 lead SOT-23, 5 lead SOT-23 and 8 lead SOIC packages. The
device is provided with On/Off pin in SOT-23 5L and in 8 lead SOIC package.
ORDERING INFORMATION
OUTPUT
VOLTAGE
FIXED
PACKAGE TYPE
TO-92
AMS3102AN-X
AMS3102N-X
SOT-89
AMS3102AL-X
AMS3102L-X
AMS3102ALR-X
AMS3102LR-X
3L SOT-23
AMS3102AM-X
AMS3102M-X
ADJ.
X = 2.0V, 2.5V, 3.0V, 3.3V, 3.5V, 4.0V, 5.0V.
R = Reverse pin-out option
TEMP.
5L SOT-23
AMS3102AM1-X
AMS3102M1-X
SO-8
AMS3102AS-X
AMS3102S-X
RANGE
-40ºC to 85ºC
-40ºC to 85ºC
AMS3102CM1
AMS3102CS
-40ºC to 85ºC
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AMS3102
ABSOLUTE MAXIMUM RATINGS (Note 1)
Overvoltage Protection
Internal Power Dissipation (Note 4)
Maximum Input Voltage
Storage Temperature
ESD
24V to 40V
Internally Limited
22V
-65°C to +150°C
2000V
OPERATING RATINGS (Note 1)
Input Voltage Range
Junction Temperature
Lead Temperature (Soldering 25 sec)
4V to 22V
+125°C
265°C
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at VIN =VO +1V, IO =10mA, TJ=25°C, C2 = 22µF unless otherwise specified.
PARAMETER
CONDITIONS
AMS3102A-X
Min.
Typ.
Max.
AMS3102-X
Min.
Typ.
Max.
Units
21
21
22
V
+3.0
%
Fixed Output Voltage Versions
Maximum Operating Input
Voltage
Output Voltage Tolerance
(VIN+1V) ≤VIN ≤21V, IO=100 mA
22
-1.0
+1.0
- 3.0
+ 3.0
-3.0
Line Regulation
Load Regulation
Dropout Voltage
Quiescent Current
%
± 5.0
-40°C ≤TJ ≤125°C
(VIN+1V) ≤VIN ≤ 15V
5
10
5
10
mV
9V ≤VIN ≤ 21V
8
30
8
30
mV
5mA ≤IO ≤ 100 mA
30
50
30
50
mV
5mA ≤10 ≤ 200 mA
50
70
50
70
mV
IO = 100 mA
250
300
300
400
mV
IO = 200 mA
500
600
500
600
mV
IO ≤ 10 mA,
0.3
0.5
0.3
0.5
mA
IO = 100 mA
3
4
3
4
mA
IO ≤ 200 mA (Note 5)
9
12
9
12
mA
Output Noise Voltage
10Hz-100kHz, COUT = 100µF
Output Impedance
100mADC and
10mArms,100Hz=10kHz
500
500
Ripple Rejection
fO =120Hz
55
80
80
dB
Maximum Line Transient
RL = 500Ω, VO ≤ 5.5V
35
40
35
40
V
-35
-40
-35
-40
V
-35
-40
-35
-40
V
200
µV rms
200
mΩ
T = 1ms, τ ≤100ms
Reverse Polarity Input Voltage,
D/C
Reverse Polarity Input Voltage,
Transient
RL = 500Ω, T = 1ms, τ ≤100ms
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AMS3102
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at VIN =6V, VOUT =3V IO =10mA, TJ=25°C, R1 =27k, C2 = 2µF unless otherwise specified.
PARAMETER
Min.
AMS3102C
Typ.
Max.
1.210
1.235
1.26
V
1.20
1.235
1.270
V
20
V
CONDITIONS
(Note 2)
Units
Adjustable Version
Reference Voltage
IO ≤ 100 mA, -40°C ≤TJ ≤ 125°C, R1=27k,
Measured from VOUT to Adjust Pin
Output Voltage Range
2
Line Regulation
VOUT + 1V ≤VIN ≤ 21V
.02
1.5
mV/V
Load Regulation
5mA ≤IO ≤ 100 mA
0.3
1
%
5mA ≤IO ≤ 200 mA
1
2
%
50
300
500
200
400
600
mV
mV
mV
0.5
4
0.5
mA
mA
mA
Dropout Voltage
IO ≤ 10 mA
IO = 100 mA
IO = 200 mA (Note 5)
IO = 10 mA
Quiescent Current
During Shutdown RL = 500Ω
0.3
3
0.3
Output Noise Voltage
10Hz-100kHz
100
Output Impedance
100mADC and 10mArms,100Hz=10kHz
40
IO = 100 mA
µVrms/V
200
mΩ
Long Term Stability
T =1000hr
0.4
%/1000hr
Ripple Rejection
fO = 120Hz
0.02
dB
Maximum Operating Input
Voltage
21
Maximum Line Transient
IO = 10mA, Reference Voltage ≤ 1.5V
22
V
35
40
V
T = 1ms, τ ≤100ms
Reverse Polarity Input Voltage,
D/C
RL = 500Ω, VO ≥ -0.3V
-35
-40
V
Reverse Polarity Input Voltage,
Transient
RL = 500Ω, T = 1ms, τ ≤100ms
-35
-40
V
On/Off Threshold Voltage
VO = 3V
On
1.8
Off
On/Off Threshold Current
2.5
VOFF = 2.4V
1.5
2.0
35
V
V
60
µA
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. For guaranteed performance limits and associated test
conditions, see the Electrical Characteristics tables.
Note 2: To ensure constant junction temperature, low duty cycle pulse testing is used.
Note 3: Limits appearing in boldface type apply over the entire junction temperature range for operation. Limits appearing in normal type apply for
TA = TJ = 25°C.
Note 4: The maximum allowable power dissipation is a function of the maximum junction temperature TJ(MAX), the junction-to ambient thermal resistance
θJ-A and the ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is calculated using:
P(MAX) =
TJ(MAX) - TA
θJ - A
Where the value of the junction-to-ambient thermal resistance are as follows: 195°C/W for the TO-92 (N) package, 110°C/W for SOT-89 (L), 220°C/W for 5
lead SOT-23 (M1) and 160°C/W for the molded plastic SO-8 (S).
Note 5: Dropout Voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V
differential.
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AMS3102
PIN CONNECTIONS
TO-92
Plastic Package (N)
OUTPUT
SOT-89
(L)
SOT-89
(L)
R = Reverse pin-out
INPUT
GND
1
INPUT
2
3
GND
1
OUTPUT
2
3
OUTPUT GND
INPUT
Bottom View
Top View
Top View
3 Lead SOT-23
(M)
5 Lead SOT-23
(M1)
8L SOIC
SO-Package (S)
GND
INPUT 1
5 OUTPUT
GROUND 2
4 ADJ / N/C
ON/OFF 3
INPUT
OUTPUT
Top View
OUTPUT 1
8 INPUT
GROUND 2
7 GROUND
GROUND 3
ADJ
4
N/C
6 GROUND
5 ON/OFF
N/C
Top View
Top View
TYPICAL PERFORMANCE CHARACTERISTICS
Dropout Voltage
IO = 200mA
0.4
0.3
IO = 150mA
0.2
IO = 100mA
0.1
0
0
80
120
40
JUNCTION TEMPERATURE (° C)
Low Voltage Behavior
0.6
6.0
0.5
OUTPUT VOLTAGE (V)
0.5
INPUT OUTPUT DIFFERENTIAL (V)
INPUT OUTPUT DIFFERENTIAL (V)
Dropout Voltage
0.6
0.4
0.3
0.2
0.1
0
5.0
AMS3102-3.3
IO = 100mA
4.0
3.0
2.0
0
0
50 100 150 200 250
OUTPUT CURRENT (mA)
300
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2.0
3.0
4.0
5.0
6.0
INPUT VOLTAGE (V)
AMS3102
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Output at Voltage Extremes
AMS3102-3.3
RL=500mΩ
85
3
2
1
0
500
RIPPLE REJECTION (dB)
4
-1
-20 -10
T J= 25°C
400
300
200
100
75
65
60
55
45
0
Quiescent Current
20
10
INPUT VOLTAGE (V)
30
Quiescent Current
10
100 1k 10k 100k 1M
FREQUENCY (Hz)
Quiescent Current
12.5
10
7.5
5.0
2.5
0
VIN = 6V
10
QUIESCENT CURRENT (mA)
QUIESCENT CURRENT (mA)
8
6
4
2
20
15
IO = 200mA
10
3
0
1
2 3 4 5 6 7 8
INPUT VOLTAGE (V)
9 10
0
Output Impedance
INPUT
VOLTAGE (V)
IO = 10mA
OUTPUT
VOLTAGE (V)
1
0.1
1
10
100
1k 10k 100k
FREQUENCY (Hz)
1M
IO = 50mA
IO = 0mA
0
-40
0
40
80
120
TEMPERATURE (° C)
Reference Voltage
1.30
~
~
AMS3102C
ADJUSTABLE
1.28
1.26
1.24
1.22
1.20
1.18
1.16
1.14
1.12
1.10
500
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IO = 100mA
1
50 100 150 200 250 300 350
OUTPUT CURRENT (mA)
Operation During Load Dump
70
60
50
40
30
τ =150 ms
20
10
0
~
CO= 100µF
5~
RL= 500Ω
4
3
2
1
0
-100 0
100 200 300 400
TIME (ms)
~
~
~
~
2
0
REFERENCE VOLTAGE (V)
QUIESCENT CURRENT (µA)
3.3V OUTPUT
IO= 100mA
10
OUTPUT IMPEDANCE (Ω)
1
25
15
0.01
IO= 10mA
50
0
0 10 20 30 40 50 60
INPUT VOLTAGE (V)
C2 = 100µF
ALUM
70
17.5
-2.5
C2 = 100µF
TANTALUM
80
OUTPUT CURRENT (mA)
5
OUTPUT VOLTAGE (V)
Ripple Rejection
Peak Output Current
600
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0
3
6 9 12 15 18 21 24
OUTPUT VOLTAGE (V)
AMS3102
APPLICATION NOTES
Definition of Terms
Typical application circuit (adjustable output)
Dropout Voltage: The input-output voltage differential at which
the circuit stops to regulate against further reduction in input
voltage. Measured when the output voltage has dropped 100mV
from the nominal voltage obtained at 1V input, dropout voltage is
dependent upon load current and junction temperature.
Input Voltage: The DC voltage applied to the input terminal with
respect to ground.
Input-Output Differential: The voltage difference between the
unregulated input voltage and the regulated output voltage for
which the regulator will regulate.
Line Regulation: The change in output voltage for a change in
the input voltage. The line regulation is measured under conditions
of low dissipation or by using low duty cycle pulse testing such
that the average chip temperature is not significantly affected.
Load Regulation: The change in output voltage for a change in
load current at constant chip temperature.
Long term stability: Output voltage stability under accelerated
life-test conditions after 1000 hours with maximum rated voltage
and junction temperature.
Output Noise Voltage: The rms AC voltage at the output, with
constant load and no input ripple, measured over a specified
frequency range.
Quiescent Current: That part of the positive input current that
does not contribute to the positive load current. The regulator
ground lead current.
Ripple Rejection: The ratio of the peak-to –peak input ripple
voltage to the peak-to-peak output ripple voltage at specified
frequency.
Temperature Stability of VO: The percentage change in output
voltage for a thermal variation from room temperature to either
temperature extreme.
VIN
100k
OUT
ON/OFF
10µF
AMS3102
ADJUSTABLE
R1
28k
+
ADJ
ON
GND
C1
22µF
R2
Minimum Load
In circuits using the fixed output voltage versions, minimum load
is not required. For circuits using the adjustable device, the value
of R1 and R2 should be chosen such, that a current of
approximately 40µA flows through the network. The reference
voltage (1.235V) is measured between the adjust pin and VOUT.
The output voltage can be set by the two resistors R1 and R2
using the following equation:
 R1 + R2 
VO = VREF 

 R1 
The value of R1 is recommended to be between 25kΩ to 30 kΩ,
and the value of R2 will set the output voltage.
External capacitor
The AMS3102 series require an output capacitor of 2.2µF or
greater to ensure device stability. Without the capacitor the device
may oscillate.
Most type of tantalum or electrolytic capacitor can be used in the
applications. A critical characteristic of the capacitors is an ESR
value of 5Ω or less and a resonant frequency above 500kHz. The
value of this capacitor can be increased without limits.
For higher loads, the value of the capacitor should be increased,
specially when the output voltage is set for 2.5V or less. The
AMS3102 lowest fixed output voltage value is 2.0V.
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AMS3102
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.
3L TO-92 PLASTIC PACKAGE (N)
0.180±0.005
(4.572±0.127)
0.060±0.005
(1.524±0.127)
DIA
0.060±0.010
(1.524±0.254)
0.90
(2.286)
NOM
0.180±0.005
(4.572±0.127)
0.140±0.010
(3.556±0.127)
10°
NOM
5° NOM
0.500
(12.70)
MIN
0.050
(1.270)
MAX
UNCONTROLLED
LEAD DIMENSIONS
0.015±0.002
(0.381±0.051)
0.016±0.003
(0.406±0.076)
0.050±0.005
(1.270±0.127)
N (TO-92 ) AMS DRW# 042391
5 LEAD SOT-23 PLASTIC PACKAGE (M1)
0.110-0.120
(2.794-3.048)
0.102-0.118
(2.60-3.00)
0.059-0.070
(1.50-1.75)
0.014-0.020
(0.350-0.50)
0.037
(0.95)
TYP
0.018-0.024
(0.457-0.610)
10°
NOM
0.036-0.051
(0.090-1.30)
0.0035-0.0080
(0.090-0.20)
0.003
(0.150)
MAX
10°
NOM
0.075
(1.90)
TYP
0.018-0.024
(0.457-0.610)
(SOT-23-5 ) AMS DRW# 051001
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AMS3102
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued).
SOT-89 PLASTIC PACKAGE (L)
0.173-0.181
(4.40-4.60)
0.055-0.063
(1.40-1.60)
0.014-0.017
(0.35-0.44)
0.064-0.072
(1.62-1.83)
0.155-0.167
(3.94-4.25)
0.084-0.090
(2.13-2.29)
0.090-0.102
(2.29-2.60)
0.035-0.047
(0.89-1.20)
0.059
(1.50)
BSC
0.014-0.019
(0.36-0.48)
0.017-0.022
(0.44-0.56)
L (SOT-89 ) AMS DRW# 042392
0.118
(3.00)
BSC
8 LEAD SOIC PLASTIC PACKAGE (S)
0.189-0.197*
(4.801-5.004)
8
7
6
5
0.150-0.157**
(3.810-3.988)
0.228-0.244
(5.791-6.197)
1
2
3
4
0.010-0.020 x 45°
(0.254-0.508)
0.053-0.069
(1.346-1.752)
0.004-0.010
(0.101-0.254)
0.014-0.019
(0.355-0.483)
0.008-0.010
(0.203-0.254)
0.050
(1.270)
TYP
0°-8° TYP
0.016-0.050
(0.406-1.270)
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
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S (SO-8 ) AMS DRW# 042293