AME AME8753 Low dropout 500ma / 500ma dual cmos ldo regulator Datasheet

AME, Inc.
AME8753
Low Dropout
500mA / 500mA Dual CMOS LDO Regulator
n General Description
n Functional Block Diagram
The AME8753 dual, low dropout, linear regulators operate from V OUT+VDROPOUT to 5.5V input and deliver up to
500mA / 500mA output current each. Low dropout voltage and low quiescent current(70µA typ.)make them ideal
for battery applications.
The AME8753 is available with a wide variety of voltage
options as standard and can be trimmed to 2% accuracy.
For protection purpose, AME8753 has both thermal shutdown and current fold-back to prevent device failure under
the "Worst" operating conditions.
Current
Limit
Error
Amp1
VOUT1
R11
R12
VIN
GND
Current
Limit
Error
Amp2
VOUT2
R21
Voltage
Reference
n Features
n Typical Applications
l Very Low Dropout Voltage
l Guaranteed 500mA / 500mA Each Output
l Accurate to within 2% for both outputs
R22
Fixed Version
VIN
IN
AME8753A
l Typical 70 µA Quiescent Current
VOUT1
OUT1
VOUT2
OUT2
l Over-Temperature Shutdown
GND
l Current Limiting
l Short Circuit Current Fold-back
1µF
1µF
1µF
l All AME’s Lead Free Products Meet RoHS
Standards
n Applications
l Cellular Phones
l Palm / Notebook
l Battery Power Equipment
l Handheld Instruments
Rev.A.02
1
AME, Inc.
Low Dropout
500mA / 500mA Dual CMOS LDO Regulator
AME8753
n Pin Configuration
SOP-8/PP
Top View
8
7
6
AME 8753AEZA
5
1. IN
2. GND
3. GND
AME8753
4. OUT1
5. OUT2
6. GND
1
2
3
4
7. GND
8. GND
* Die Attach:
Conductive Epoxy
Note: The area enclosed by dashed line represents Exposed Pad and connection to GND.
n Pin Description
2
Pin Number
Pin Name
1
IN
2
GND
3
GND
4
OUT1
5
OUT2
6
GND
7
GND
8
GND
Description
Regulator Input.
Supply voltage can range from Higher VOUT+VDROPOUT to 5.5V. This input
also supplies the on-chip reference. Bypass with 1µF capacitor to GND.
Ground.
This pin also functions as heatsink. Solder to a large pad or the circuitboard ground plane to maximize thermal dissipation.
Ground.
This pin also functions as heatsink. Solder to a large pad or the circuitboard ground plane to maximize thermal dissipation.
Regulator 1 Output.
Sources up to 500mA continuous current.
Bypass with a 1µF (< 0.5Ω typ ESR) capacitor to GND.
Regulator 2 Output.
Sources up to 500mA continuous current.
Bypass with a 1µF (< 0.5Ω typ ESR) capacitor to GND.
Ground.
This pin also functions as heatsink. Solder to a large pad or the circuitboard ground plane to maximize thermal dissipation.
Ground.
This pin also functions as heatsink. Solder to a large pad or the circuitboard ground plane to maximize thermal dissipation.
Ground.
This pin also functions as heatsink. Solder to a large pad or the circuitboard ground plane to maximize thermal dissipation.
Rev.A.02
AME, Inc.
Low Dropout
500mA / 500mA Dual CMOS LDO Regulator
AME8753
n Ordering Information
AME8753 x x x x xxxx x
Special Feature
Output Voltage
Number of Pins
Package Type
Operating Ambient Temperature Range
Pin Configuration
Pin
Configuration
A
(SOP-8/PP)
1. IN
2. GND
3. GND
4. OUT1
5. OUT2
6. GND
7. GND
8. GND
Operating Ambient
Temperature
Range
E: -40OC to 85OC
Package
Type
Z: SOP/PP
Number
of
Pins
A: 8
Output
Voltage
(Both LDOs)
2533: VOUT1=2.5V
Special Feature
Z: Lead free
VOUT2=3.3V
n Ordering Information
Part Number
Marking*
AME8753AEZA2533Z
AME8753
AEZA2533
yyww
Output Voltage
VOUT1=2.5V
VOUT2=3.3V
Package
Operating Ambient
Temperature Range
SOP-8/PP
- 40oC to 85oC
Note:yyww represents date code .
* a line on top of the first letter represents lead free plating such as AME8753.
Please consult AME sales office or authorized Rep./Distributor for voltage accuracy and package type availability.
Rev.A.02
3
AME, Inc.
Low Dropout
500mA / 500mA Dual CMOS LDO Regulator
AME8753
n Absolute Maximum Ratings
Parameter
Maximum
Unit
-0.3 to 6
V
Output Voltage
-0.3 to VIN + 0.3
V
Output Current
PD / [2V IN -(V OUT1+VOUT2)]
mA
Input Voltage
C*
ESD Classification
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
* HBM C:4000V+
n Recommended Operating Conditions
Parameter
Symbol
Rating
Unit
Ambient Temperature Range
TA
-40 to 85
o
C
Junction Temperature Range
TJ
-40 to 125
o
C
Storage Temperature Range
TSTG
-65 to 150
o
C
n Thermal Information
Parameter
Package
Die Attach
Thermal Resistance *
(Junction to Case)
Symbol
Maximum
θJC
19
Unit
o
C/W
Thermal Resistance
(Junction to Ambient)
SOP-8/PP
Conductive Epoxy
Internal Power Dissipation
θJA
84
PD
1450
mW
Maximum Junction Temperature
150
o
C
Solder Iron (10 Sec)**
350
o
C
* Measure θJC on center of molding compound if IC has no tab.
** MIL-STD-202G 210F
4
Rev.A.02
AME, Inc.
Low Dropout
500mA / 500mA Dual CMOS LDO Regulator
AME8753
n Electrical Specifications
Unless specified: TJ=25OC, VIN=Higher VOUT+1V, IOUT1=IOUT2=1mA, CIN=COUT=1µF.
Typical values are at TJ=25OC
Parameter
Symbol
Test Condition
Min
Typ
Max
Units
5.5
V
160
µA
IN
Input Supply Voltage
VIN
Quiescent Current
Note1
IQ
70
OUT1, OUT2
-2%
IOUT=1mA
Output Voltage
VOUT
0mA<IOUT<=500mA,
VOUT+1V<VIN<5.5V
Line Regulation
REGLINE
Load Regulation
REGLOAD
Dropout Voltage
VDROP
2%
TJ=-40oC to +125oC -2.5%
TJ=25oC
2.5%
V
-0.2
0.2
IOUT=1mA
TJ=-40 C to +125 C -0.25
0.25
1mA<IOUT
TJ=-40oC to +125oC -0.005 +0.0025 0.005 %/mA
VOUT+1V<VIN<5.5V
o
o
%/V
IOUT1=IOUT2=500mA
(VO=VO(NOM)-2%),
TJ=-40oC to +125oC
800
mV
VO(NOM)>=2.5V
Current Limit
ILIM
Short Circuit Current
ISC
Ripple Rejection
Output Voltage Noise
PSRR
en
700
1400
350
f=100HZ, IOUT=1mA
55
f=1kHZ, IOUT=1mA
55
f=10kHZ, IOUT=1mA
48
f=1kHz to 100kHz, COUT=1µF
550
500
mA
dB
µVRMS
Over Temperature Protection
Over Temperature Shutdown
Over Temperature Hysteresis
OTS
OTH
150
o
20
o
C
C
Note1: VIN(min)=HigherVOUT+ VDropout
Rev.A.02
5
AME, Inc.
AME8753
Low Dropout
500mA / 500mA Dual CMOS LDO Regulator
n Detailed Description
The AME8753 is low-dropout, low quiescent-current linear regulator designed primarily for battery-powered applications. These parts are available with preset output voltage ranging from 2.5V to 3.3V, and the parts can supply
loads up to 500mA.
Internal P-Channel Pass Transistor
The AME8753 features two 1Ω P-Channel MOSFET pass
transistors. A P-Channel MOSEFT provides several advantages over similar designs using PNP pass transistors, including longer battery life. It requires no base drive, which
reduces quiescent current significantly. The AME8753 only
consume 70µA of quiescent current whether in dropout, lightload, or heavy-load applications.
n Application Information
Capacitor Selection and Regulator Stability
Use a 1µF capacitor on the AME8753 input and a
1µF capacitor on the outputs. Larger input capacitor
values and lower ESRs provide better supply noise rejection and line transient response.
PSRR and Operation from Sources Other
than Batteries
The AME8753 is designed to deliver low dopout voltages and low quiescent currents in battery powered
systems. Power-supply rejection is 50dB at low frequencies.
Current Limit
The AME8753 contains two independent current limiters, one for each regulator, which monitor and control the
pass transistor’s gate voltage, limiting output current to
700mA minimum. The output can be shorted to ground for
an indefinite time without damaging the part.
Thermal-Overload Protection
Thermal -overload protection limits total power dissipation in the AME8753. When the junction trmperature exceeds T J=150oC, the themal sensor signals the shutdown
logic, turning off the pass transistor and allowing the IC to
cool.
6
Rev.A.02
AME, Inc.
Low Dropout
500mA / 500mA Dual CMOS LDO Regulator
AME8753
Channel-to-Channel Isolation (dB)
Quiescent Current vs Input Voltage
140
Quiescent Current (µA)
120
O
85 C
100
O
55 C
O
80
25 C
60
-5 C
O
O
-45 C
40
20
Channel-to-Channel Isolation
(dB)
100
O
125 C
10
0
VIN=5V
RLOAD=50Ω
1
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
0.01
6
Quiescent Current vs Temperature
1
10
100
Output Noise Spectral Density
110
10
IOUT=1,50,100,150mA
100
Noise(µV/√Hz)
Quiescent Current @ 5V (µA)
0.1
Frequency (KHz)
Input Voltage (V)
90
80
70
1
60
50
-50
0.1
0
50
100
1
10
Temperature (oC)
Frequency(kHz)
Dropout Voltage vs Load Current
Line Transient
100
900
85℃
VIN
125℃
3.5V 4.5V
1V/DIV
700
600
500
25℃
400
-5℃
300
20mV/DIV
(AC-Coupled)
-45℃
200
100
Vout
Dropout Voltage (mV)
55℃
VOUT=3.3V
800
Vout=3.3V
0
0
100
200
300
Load Current (mA)
Rev.A.02
400
500
50µs/DIV
7
AME, Inc.
Low Dropout
500mA / 500mA Dual CMOS LDO Regulator
AME8753
Output Voltage vs Temperature
900
3.31
800
VOUT=3.3V
3.30
700
Output Voltage (V)
600
500
400
300
200
3.29
3.28
3.27
3.26
100
0
1.5
2
2.5
3
3.25
-50
3.5
Output Voltage (V)
0
120
60
100
50
Both Output Loaded
60
40
40
30
20
VIN=4.3V
VOUT =3.3V
ILOAD=50mA
10
20
0
0
100
200
300
400
10
500
100
1000
10000
100000
Load Current (mA)
Frequency (Hz)
Load Transient
Load Transient Near Dropout
VIN=4.3V
ILOAD= 0 to 500mA
500mA/div
VOUT
20mV/div
(AC-COUPLED)
0
ILOAD
100µs/div
1000000
VIN=VOUT+0.7V
ILOAD=0 to 500mA
20mV/div
(AC-COUPLED)
80
PSRR (dB)
Supply Current (µA)
100
PSRR vs Frequency
Supply Current vs Load Current
8
50
Temperature (oC)
VOUT
500mA/div
Dropout Voltage @ 500mA (mV)
Dropout Voltage vs Output Voltage
ILOAD
0
0
100µs/div
Rev.A.02
AME, Inc.
Low Dropout
500mA / 500mA Dual CMOS LDO Regulator
AME8753
n Tape and Reel Dimension
SOP-8/PP
P
PIN 1
W
AME
AME
Carrier Tape, Number of Components Per Reel and Reel Size
Rev.A.02
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
SOP-8/PP
12.0±0.1 mm
4.0±0.1 mm
2500pcs
330±1 mm
9
AME, Inc.
Low Dropout
500mA / 500mA Dual CMOS LDO Regulator
AME8753
n Package Dimension
SOP-8/PP
Top View
Side View
SYMBOLS
E1
D
L1
θ
e
A1
A
A2
Front View
INCHES
MIN
MAX
MIN
MAX
A
-
1.700
-
0.067
A1
0.050
0.150
0.002
0.006
A2
1.350
1.550
0.053
0.061
C
0.100
0.250
0.004
0.010
E
3.750
4.150
0.148
0.163
E1
5.700
6.300
0.224
0.248
L
0.300
0.700
0.012
0.028
b
0.310
0.510
0.012
0.020
D
4.720
5.120
0.186
0.202
C
E
MILLIMETERS
e
θ
1.270 BSC
0
o
8
0.05 BSC
o
0o
8o
b
10
Rev.A.02
www.ame.com.tw
E-Mail: [email protected]
Life Support Policy:
These products of AME, Inc. are not authorized for use as critical components in life-support
devices or systems, without the express written approval of the president
of AME, Inc.
AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and
advises its customers to obtain the latest version of relevant information.
 AME, Inc. , February 2007
Document: 2075-DS8753-A.02
Corporate Headquarter
U.S.A. (Subsidiary)
AME, Inc.
Analog Microelectronics, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District
Taipei 114, Taiwan.
3100 De La Cruz Blvd., Suite 201
Tel: 886 2 2627-8687
Fax: 886 2 2659-2989
Santa Clara, CA. 95054-2438
Tel : (408) 988-2388
Fax: (408) 988-2489
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