AMS3102C [ADMOS]
300mA LOW DROPOUT VOLTAGE REGULATOR; 300mA低压差稳压器
| 型号： | AMS3102C |
| 厂家： | 
ADVANCED MONOLITHIC SYSTEMS |
| 描述： | 300mA LOW DROPOUT VOLTAGE REGULATOR |
| 文件： | 总8页 (文件大小：244K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Advanced
Monolithic
Systems
AMS3102
300mA LOW DROPOUT VOLTAGE REGULATOR
RoHS compliant
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
• Cellular Telephones
• Portable Consumer Equipment
• Portable (Notebook) Computers
• Battery Powered Systems
• Portable Instrumentation
• Radio Control Systems
• CD/DVD drives
• Internal Thermal Overload Protection
• Load Dump Protection
• Overvoltage Protection
• Mirror Image Insertion Protection
• ON/OFF Pin
•External PNP Drive
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
PACKAGE TYPE
TEMP.
TO-92
SOT-89
3L SOT-23
5L SOT-23
SO-8
VOLTAGE
RANGE
FIXED
AMS3102AN-X AMS3102AL-X
AMS3102AM-X AMS3102AM1-X AMS3102AS-X
IND
IND
AMS3102N-X
AMS3102L-X
AMS3102M-X
AMS3102M1-X
AMS3102S-X
AMS3102ALR-X
AMS3102LR-X
ADJ.
AMS3102CM1
AMS3102CS
IND
X = 2.0V, 2.5V, 3.0V, 3.3V, 3.5V, 4.0V, 5.0V.
R = Reverse pin-out option
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS3102
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Voltage
Maximum Junction Temperature
Storage Temperature
+125°C
Operating
21V
-65°C to +150°C
Overvoltage Protection
Internal Power Dissipation (Note 4)
24V to 40V
Internally Limited
Lead Temperature (Soldering 25 sec)
ESD
265°C
2000V
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at VIN =VO +1V, IO =10mA, TJ=25°C, C2 = 22µF unless otherwise specified.
AMS3102A-X
AMS3102-X
Typ.
PARAMETER
CONDITIONS
Units
Min.
Typ.
Max. Min.
Max.
Fixed Output Voltage Versions
Output Voltage Tolerance
-1.0
+1.0
-3.0
+3.0
%
%
(VIN+1V) ≤V ≤21V, IO=100 mA
IN
- 3.0
+ 3.0
± 5.0
-40°C ≤T ≤125°C
J
(VIN+1V) ≤V ≤ 15V
Line Regulation
Load Regulation
Dropout Voltage
5
8
10
30
5
8
10
30
mV
mV
IN
9V ≤V ≤ 21V
IN
30
50
50
70
30
50
50
70
mV
mV
5mA ≤I ≤ 100 mA
O
5mA ≤10 ≤ 200 mA
I = 100 mA
0.25
0.5
0.3
0.6
0.3
0.5
0.4
0.6
mV
mV
O
I = 200 mA
O
0.3
3
0.5
4
0.3
3
0.5
4
mA
mA
mA
I ≤ 10 mA,
Quiescent Current
O
I = 100 mA
O
9
12
9
12
I ≤ 200 mA (Note 5)
O
Output Noise Voltage
Output Impedance
Ripple Rejection
500
500
10Hz-100kHz, COUT = 100µF
100mADC and 10mArms,100Hz=10kHz
fO =120Hz
µV rms
mΩ
200
200
55
21
80
22
80
22
dB
Maximum Operational Input
Voltage
21
35
V
V
Maximum Line Transient
35
40
40
RL = 500Ω, VO ≤ 5.5V
T = 1ms, τ ≤100ms
Reverse Polarity Input Voltage,
D/C
-35
-35
-40
-40
-35
-35
-40
-40
V
V
Reverse Polarity Input Voltage,
Transient
RL = 500Ω, T = 1ms, τ ≤100ms
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS3102
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at VIN =6V, VOUT =3V IO =10mA, TJ=25°C, R1 =27k, C2 = 2µF unless otherwise specified.
AMS3102C
PARAMETER
CONDITIONS
Units
Min.
Max.
(Note 2)
Typ.
Adjustable Version
Reference Voltage
1.210
1.235
1.26
V
V
IO ≤ 100 mA, -40°C ≤T ≤ 125°C, R1=27k,
J
1.20
1.235
1.270
Measured from VOUT to Adjust Pin
Output Voltage Range
Line Regulation
2
20
V
.02
1.5
mV/V
VOUT + 1V ≤V ≤ 21V
IN
Load Regulation
0.3
1
1
2
%
%
5mA ≤I ≤ 100 mA
O
5mA ≤I ≤ 200 mA
O
Dropout Voltage
Quiescent Current
I ≤ 10 mA
0.05
0.3
0.2
0.4
0.6
V
V
V
O
I = 100 mA
O
0.5
I = 200 mA (Note 5)
O
I = 10 mA
0.3
3
0.5
4
mA
mA
mA
O
I = 100 mA
O
0.3
0.5
During Shutdown RL = 500Ω
10Hz-100kHz
Output Noise Voltage
Output Impedance
Long Term Stability
Ripple Rejection
100
40
µVrms/V
mΩ
100mADC and 10mArms,100Hz=10kHz
T =1000hr
200
0.4
0.02
22
%/1000hr
dB
fO = 120Hz
Maximum Operational Input
Voltage
21
35
V
Maximum Line Transient
40
V
IO = 10mA, Reference Voltage ≤ 1.5V
T = 1ms, τ ≤100ms
Reverse Polarity Input Voltage,
D/C
-35
-35
-40
-40
V
V
RL = 500Ω, VO ≥ -0.3V
RL = 500Ω, T = 1ms, τ ≤100ms
VO = 3V
Reverse Polarity Input Voltage,
Transient
On/Off Threshold Voltage
On
1.8
2.0
35
1.5
60
V
V
Off
2.5
On/Off Threshold Current
VOFF = 2.4V
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:
TJ(MAX) - TA
P(MAX) =
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.
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS3102
PIN CONNECTIONS
TO-92
Plastic Package (N)
SOT-89
(L)
SOT-89
(L)
R = Reverse pin-out
OUTPUT
INPUT
GND
1
2
3
1
2
3
INPUT GND
OUTPUT
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
1
2
3
INPUT
GROUND
ON/OFF
5
4
OUTPUT
ADJ / N/C
OUTPUT
GROUND
GROUND
1
2
3
4
8
7
6
5
INPUT
GROUND
GROUND
ADJ
N/C
ON/OFF
N/C
INPUT
OUTPUT
Top View
Top View
Top View
TYPICAL PERFORMANCE CHARACTERISTICS
Dropout Voltage
Dropout Voltage
Low Voltage Behavior
0.6
0.6
6.0
5.0
AMS3102-3.3
IO = 100mA
0.5
0.4
0.3
0.5
0.4
0.3
IO = 200mA
4.0
3.0
IO = 150mA
IO = 100mA
0.2
0.1
0
0.2
0.1
0
2.0
0
80
120
300
0
40
0
50 100 150 200 250
OUTPUT CURRENT (mA)
2.0
3.0
4.0
5.0
6.0
INPUT VOLTAGE (V)
JUNCTION TEMPERATURE (° C)
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AMS3102
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Output at Voltage Extremes
Ripple Rejection
Peak Output Current
600
6
5
85
80
C2 = 100
TANTALUM
µF
AMS3102-3.3
RL=500m
Ω
500
400
300
TJ= 25°C
75
70
65
60
55
50
45
4
C2 = 100
ALUM
µF
3
2
200
100
0
1
0
IO= 10mA
-1
-20 -10
0
10 20 30 40 50 60
1
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
20
0
10
30
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Quiescent Current
Quiescent Current
Quiescent Current
25
20
15
17.5
15
3.3V OUTPUT
IO= 100mA
VIN = 6V
10
8
12.5
10
IO = 200mA
10
3
~
~
~
~
7.5
5.0
2.5
0
6
IO = 100mA
4
2
1
IO = 50mA
IO = 0mA
2
0
0
-40
-2.5
200
0
1
2
3
4
5
6
7
8
9
10
0
100 150
300 350
250
0
40
80
120
50
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
TEMPERATURE (° C)
Output Impedance
Operation During Load Dump
Reference Voltage
1.30
1.28
1.26
1.24
1.22
10
1
70
60
AMS3102C
ADJUSTABLE
IO = 10mA
50
40
30
20
10
0
5
4
3
2
τ =150ms
1.20
1.18
~
~
~
~
CO= 100
RL= 500
µF
Ω
0.1
1.16
1.14
1.12
1.10
1
0
-100
0.01
1M
1
10 100
1k 10k 100k
0
100 200 300 400 500
TIME (ms)
0
3
6
9
12 15 18 21 24
FREQUENCY (Hz)
OUTPUT VOLTAGE (V)
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
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.
VIN
100k
OUT
VOUT
OFF
ON/OFF
AMS3102
ADJUSTABLE
R1
28k
10µ
F
+
ADJ
ON
C1
22
µ
F
GND
R2
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.
Minimum Load
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.
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:
.
Ripple Rejection: The ratio of the peak-to –peak input ripple
voltage to the peak-to-peak output ripple voltage at specified
frequency.
R1+ R2
R1
⎛
⎜
⎞
⎟
VO = VREF
⎝
⎠
Temperature Stability of VO: The percentage change in output
voltage for a thermal variation from room temperature to either
temperature extreme.
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.
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
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
UNCONTROLLED
LEAD DIMENSIONS
0.050
(1.270)
MAX
0.015±0.002
N (TO-92 ) AMS DRW# 042391
(0.381±0.051)
0.016±0.003
(0.406±0.076)
0.050±0.005
(1.270±0.127)
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)
10°
NOM
0.003
(0.150)
MAX
0.075
(1.90)
TYP
0.018-0.024
(0.457-0.610)
(SOT-23-5 ) AMS DRW# 051001
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
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
0.228-0.244
(5.791-6.197)
0.150-0.157**
(3.810-3.988)
1
2
3
4
0.010-0.020
(0.254-0.508)
x 45°
0.053-0.069
(1.346-1.752)
0.004-0.010
(0.101-0.254)
0.008-0.010
(0.203-0.254)
0°-8° TYP
0.014-0.019
(0.355-0.483)
0.050
(1.270)
TYP
0.016-0.050
(0.406-1.270)
S (SO-8 ) AMS DRW# 042293
*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
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
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