AME8855A High PSRR, Low Noise, 600mA CMOS

AME
AME8855A
n General Description
The AME8855A family of positive, CMOS linear regulators provide low dropout voltage([email protected]), low
quiescent current, and low noise CMOS LDO. These
rugged devices have both Thermal Shutdown, and Current limit to prevent device failure under the "Worst" of
operating conditions.
High PSRR, Low Noise, 600mA
CMOS Regulator
n Typical Application
IN
OUT
IN
OUT
AME8855 A
EN
GND
CIN
1µF
COUT
1µF
n Features
l
l
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l
l
l
l
l
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Low Dropout Voltage: [email protected]
Guaranteed Current: 600mA
Quiescent Current: 60µA (typ.)
Over-Temperature Shutdown
Current Limiting protection
PSRR: [email protected]
Ultra-Low-Noise: 100µVRMS at 1Hz to 100KHz
Low Temperature Coefficient
Input Voltage Range 2.8V~5.5V
Output Voltage Range: 0.8V ~ 4.3V
Green Products Meet RoHS Standards
n Functional Block Diagram
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
R1
EN
AMP
+
n Applications
l
l
l
l
l
l
Rev. C.02
Instrumentation
Portable Electronics
Wireless Devices
Cordless Phones
PC Peripherals
Battery Powered Widgets
Vref
R2
GND
1
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Pin Configuration
SOT-25
Top View
5
4
AME8855 A
1
2
3
SOP-8
Top View
AME8855A-AEVxxx
1. IN
2. GND
3. EN
4. NC
5. OUT
8
* Die Attach:
Conductive Epoxy
7
6
5
AME8855 A
1
2
3
4
AME8855A-AHAxxx
1. IN
2. GND
3. GND
4. OUT
5. NC
6. GND
7. GND
8. EN
* Die Attach:
Conductive Epoxy
n Pin Description
Pin Number
2
Pin Name
Pin Description
SOT-25
SOP-8
1
1
IN
2
2,3,6,7
GND
3
8
EN
Enable pin, Active “high". When pulled “low”, the PMOS pass transistor
turns off, current consuming less than 1 A. When EN pin floating
outside, it’s weakly pulled low by internal small current source .
4
5
NC
No connection.
5
4
OUT
Input voltage pin; should be decoupled with 1 F or greater capacitor.
Ground connection pin.
LDO voltage regulator output pin; should be decoupled with a 1.0 F or
greater value low ESR ceramic capacitor.
Rev. C.02
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Ordering Information
AME8855A - x x x xxx
Output Voltage
Number of Pins
Package Type
Pin Configuration
Pin Configuration
A
(SOT-25)
A
(SOP-8)
Rev. C.02
1.
2.
3.
4.
5.
IN
GND
EN
NC
OUT
1.
2.
3.
4.
5.
6.
7.
8.
IN
GND
GND
OUT
NC
GND
GND
EN
Package Type
E: SOT-2X
H: SOP
Number of Pins
A: 8
V: 5
Output Voltage
080:
090:
100:
110:
120:
130:
140:
150:
:
:
420:
430:
0.8V
0.9V
1.0V
1.1V
1.2V
1.3V
1.4V
1.5V
:
:
4.2V
4.3V
3
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Absolute Maximum Ratings
Parameter
Maximum
Unit
Input Voltage
-0.3 to 6
V
EN Voltage
-0.3 to 6
V
Output Current
PD /(VIN -VOUT)
mA
Output Voltage
GND-0.3 to VIN +0.3
V
HBM
2
kV
MM
200
V
ESD Classification
Caution: Stress above the listed in absolute maximum ratings may cause permanent damage to the device.
n Recommended Operating Conditions
Parameter
Symbol
Rating
Ambient Temperature Range
TA
-40 to +85
Junction Temperature Range
TJ
-40 to +125
Storage Temperature Range
T STG
-65 to +150
Unit
o
C
n Thermal Information
Parameter
Package
Thermal Resistance*
(Junction to Case)
SOT-25
Thermal Resistance
(Junction to Ambient)
SOT-25
Internal Power Dissipation
SOP-8
SOP-8
SOT-25
SOP-8
Die Attach
Symbol
Conductive Epoxy
θJC
Conductive Epoxy
θJA
Conductive Epoxy
PD
Maximum
81
60
260
150
400
810
Unit
o
C/W
o
C/W
mW
Maximum Juction Temperature
150
o
C
Lead Temperature (Soldering, 10Sec. )**
260
o
C
* Measure θJC on backside center of molding compound if IC has no tab.
** MIL-STD-202G 210F
4
Rev. C.02
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Electrical Specifications
VIN=VOUT(NOM) +1V, (for VOUT<2V, VIN=2.8V), IOUT=1mA, and COUT=1µF, CIN=1µF unless otherwise noted.
Typical values are at TA=25oC.
Parameter
Input Voltage
Output Accuracy
Output Voltage Range
Dropout Voltage
(Note 1)
Output Current
Quiescent Current
Symbol
VIN
VOUT,ACC
VDROP
Rev. C.02
Min
Max
Units
2.8
5.5
V
-2.0
2.0
%
0.8
4.3
V
Note2
IOUT=600mA, 2.0V<VOUT(NOM)2.8V
850
IOUT
IQ
REGLINE
REGLOAD
Typ
IOUT=600mA, 0.8VVOUT(NOM)2.0V
IOUT=600mA, 2.8V<VOUT(NOM)
Load Regulation
∆VOUT
× 100%
VOUT
∆I OUT
IOUT=1mA
VOUT
Line Regulation
∆VOUT
× 100%
∆V IN
VOUT
Test Condition
420
mV
650
600
mA
IOUT=0mA
60
90
IOUT=1mA, 0.8VVOUT1.2V,
2.8VVIN3.5V
0.125
0.25
IOUT=1mA, 1.2V<VOUT2.0V,
2.8VVIN3.5V
0.1
0.2
IOUT=1mA, 2.0V<VOUT4.2V,
VIN(MIN)VINVIN(MIN)+1V
0.05
0.1
IOUT=1mA, 4.2V<VOUT4.5V,
VIN(MIN)VIN5.5V
0.05
0.25
1mAIOUT600mA
0.8VVOUT(NOM)1.2V
1.5
3
1mAIOUT600mA
1.2VVOUT(NOM)2.0V
1.25
2.5
1mAIOUT600mA
2.0V<VOUT(NOM)
1.0
2.0
µA
%/V
%/A
5
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Electrical Specifications (Contd.)
Parameter
Power Supply
Rejection Ration
Symbol
PSRR
Test Condition
COUT=1uF, VOUT=0.8V
IOUT=10mA
VIN=2.8V
Min
Typ
F=100Hz
60
F=1KHz
60
F=10KHz
60
Max
dB
Output Voltage Noise
eN
IOUT=10mA, VOUT=0.8V,
f=1Hz to 100KHz
Enable High (Enabled)
VEN,HI
VIN(MIN)VIN5.5V
1.4
VIN
Enable Low (Shutdown)
VEN,LO
VIN(MIN)VIN5.5V
0
0.4
IEN,HI
VEN=VIN
8
IEN,LO
VEN=0V
1
ISHDN
VIN=5.0V, VEN=0V
VOUT,SD
IOUT=0.4mA, VEN=0
Output Current Limit
ILIM
VOUT=0.9 x VOUT(NOM)
Short-Circuit Current
ISC
VOUT0.6V
300
Thermal Shutdown
Temperature
TSHDN
Shutdown, temperature increasing
150
Thermal Shutdown
Hysteresis
TSHDN(HYS)
Enable Input Bias Current
Shutdown Current
Shutdown Output Voltage
µVRMS
100
0.1
Units
V
µA
1
µA
0.4
V
Protection
750
mA
o
C
20
Note1: Dropout Voltage is measured at VOUT=VOUT(NOM)x98%
Note2:For VOUT below 2.0V, Dropout Voltage is the Input(MIN) Voltage to Output Voltage differential.
6
Rev. C.02
AME
AME8855A
High PSRR, Low Noise, 600mA
CMOS Regulator
n Detailed Description
Capacitor Selection and Regulator Stability
The AME8855 family of CMOS regulators contain a
PMOS pass transistor, voltage reference, error amplifier,
over-current protection thermal shutdown, and Power Good
detection circuitry.
The P-channel pass transistor receives data from the
error amplifier, over-current shutdown, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference.
Over-current and Thermal shutdown circuits become active when the junction temperature exceeds 150oC, or
the current exceeds 600mA. During thermal shutdown,
the output voltage remains low. Normal operation is restored when the junction temperature drops more 20oC.
The maximum output power of the AME8855 is limited
by the maximum power dissipation of the package. By
calculation the power dissipation of the package as a
function of the input voltage, output voltage and output
current, the maximum input voltage can be obtained. The
maximum power dissipation should not exceed the
package’ s maximum power rating.
PMAX = (VIN(MAX)-VOUT) x IOUT
Where:
VIN(MAX) = maximum input voltage
PMAX = maximum power dissipation of the package
Capacitor Selection and Regulator Stability
The AME8855 is stable with an output capacitor to
ground of 1µF or greater. Ceramic capacitors have the
lowest ESR, and will offer the best AC performance. Conversely, Aluminum Electrolytic capacitors exhibit the highest ESR, resulting in the poorest AC response. Unfortunately, large value ceramic capacitors are comparatively
expensive. One option is to parallel a 0.1µF ceramic
capacitor with a 10µF Aluminum Electrolytic. The benefit
is low ESR, high capacitance, and low overall cost.
A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should
be at least 0.1µF to have a beneficial effect.
Enable Pin
The Enable Pin is Active high. When activated pulled
low, the MOS pass transistor shuts off, and all internal
circuits are powered down. In this state, the stand by
current is less than 1µA. When EN pin float outside, It's
pulled Low.
Rev. C.02
7
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Characterization Curve
Output Voltage
1.05
1.04
1.04
1.03
1.03
Output Voltage (V)
Output Voltage (V)
Output Voltage
1.05
1.02
1.01
1.00
0.99
VIN = 2.8V
VOUT = 1V
IOUT = 1mA
0.98
0.97
0.96
0.95
-40
1.02
1.01
1.00
0.99
0.98
VIN = 2.8V
VOUT = 1V
IOUT = 600mA
0.97
0.96
-25
-10
-5
20
35
50
65
80
95
110
0.95
-40
125
Temperature (oC)
-25
-10
-50
4.45
4.40
4.40
4.35
4.30
VIN = 5.5V
VOUT = 4.3V
IOUT = 1mA
4.25
4.20
4.15
-40
-25
-10
5
20
35
50
65
80
95
110
4.15
-40
125
95
110
125
-25
-10
5
20
35
50
65
80
95
110
125
Temperature (oC)
Quiescent Current
100
100
90
90
Quiescent Current (µA)
Quiescent Current (µA)
80
VIN = 5.5V
VOUT = 4.3V
IOUT = 600mA
4.25
4.20
80
70
60
50
40
30
VOUT = 1V
10
80
70
60
50
40
30
20
VOUT = 4.3V
10
-20
-10
5
20
35
50
65
Temperature (oC)
8
65
4.30
Quiescent Current
0
-40
50
4.35
Temperature (oC)
20
35
Output Voltage
4.45
Output Voltage (V)
Output Voltage (V)
Output Voltage
20
Temperature (oC)
80
95
110
125
0
-40
-25
-10
5
20
35
50
65
80
95
110
125
Temperature (oC)
Rev. C.02
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Characterization Curve (Contd.)
Current Limit vs Input Voltage
1600
1600
1400
1400
Current Limit (mA)
Current Limit (mA)
Current Limit vs Input Voltage
1200
1000
800
1200
1000
800
VOUT = 1V
600
2.8
3.8
5. 5
4.8
5. 5
Dropout Voltage
Stability vs. ESR vs. Load Current
500
400
300
200
VOUT = 1V
Region of Stable COUT ESR(Ω)
10.00
100
Unstable Range
1.00
0.10
Stable Range
0.01
0.005
VIN = 5V
CIN = COUT= 1µF / X7R
0.00
-25
-10
5
20
35
50
65
Temperature (oC)
80
95
110 125
0
50
100
Unstable Range
150
200
Short Circuit Current Protection
Short Circit Current Protection
Short Circuit Current (mA)
600
500
400
300
700
600
500
400
300
VOUT = 4.3V
VOUT = 1V
200
2.8
3.8
Input Voltage (V)
Rev. C.02
300
800
700
200
250
Load Current (mA)
800
Short Circuit Current (mA)
5. 4
Input Voltage (V)
600
Dropout Voltage (mV)
5.3
Input Voltage (V)
700
0
-40
V OUT = 4.3V
600
4.8
5.5
5.5
5.3
Input Voltage (V)
9
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Characterization Curve (Contd.)
Line Transient Response
Line Transient Response
TA=-40oC, VOUT =1V, IOUT =10mA
T A=-40oC, VOUT=4.3V, IOUT=10mA
V IN
(1V/Div)
V IN
(1V/Div)
VOUT
(20mV/Div)
VOUT
(20mV/Div)
20µS/Div
20µS/Div
Line Transient Response
Line Transient Response
TA=-40oC, VOUT =1V, IOUT =600mA
TA=-40oC, VOUT =4.3V, IOUT =600mA
V IN
(1V/Div)
VIN
(1V/Div)
VOUT
(20mV/Div)
VOUT
(20mV/Div)
20µS/Div
20µS/Div
Line Transient Response
Line Transient Response
TA=25oC, VOUT =4.3V, IOUT =10mA
o
TA =25 C, VOUT=1V, IOUT =10mA
V IN
(1V/Div)
VIN
(1V/Div)
VOUT
(20mV/Div)
VOUT
(10mV/Div)
20µS/Div
10
20µS/Div
Rev. C.02
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Characterization Curve (Contd.)
Line Transient Response
Line Transient Response
TA =25oC, VOUT=1V, IOUT =600mA
T A=25oC, VOUT =4.3V, IOUT =600mA
V IN
(1V/Div)
V IN
(1V/Div)
VOUT
(20mV/Div)
VOUT
(10mV/Div)
20µS/Div
20µS/Div
Line Transient Response
Line Transient Response
TA =125oC, V OUT=1V, IOUT =10mA
T A=125oC, VOUT =4.3V, IOUT=10mA
V IN
(1V/Div)
V IN
(1V/Div)
VOUT
(20mV/Div)
VOUT
(10mV/Div)
20µS/Div
20µS/Div
Line Transient Response
Line Transient Response
TA =125oC, VOUT=1V, IOUT =600mA
TA =125oC, V OUT=4.3V, IOUT =600mA
V IN
(1V/Div)
V IN
(1V/Div)
VOUT
(50mV/Div)
VOUT
(10mV/Div)
20µS/Div
Rev. C.02
20µS/Div
11
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Characterization Curve (Contd.)
Load Transient Response
Load Transient Response
TA=-40oC, VOUT=4.3V, IOUT=10~600mA
TA=-40oC, VOUT=1V, IOUT=10~600mA
VOUT
(20mV/Div)
VOUT
(20mV/Div)
IOUT
(200mA/Div)
IOUT
(200mA/Div)
Time (20µSec/Div)
Time (20µSec/Div)
Load Transient Response
Load Transient Response
TA=25oC, VOUT=4.3V, IOUT=10~600mA
TA=25oC, VOUT=1V, IOUT=10~600mA
VOUT
(20mV/Div)
VOUT
(20mV/Div)
IOUT
(200mA/Div)
IOUT
(200mA/Div)
Time (20µSec/Div)
Time (20µSec/Div)
Load Transient Response
Load Transient Response
TA=125oC, VOUT=1V, IOUT=10~600mA
VOUT
(20mV/Div)
VOUT
(20mV/Div)
IOUT
(200mA/Div)
IOUT
(200mA/Div)
Time (20µSec/Div)
12
TA=125oC, VOUT=4.3V, IOUT=10~600mA
Time (20µSec/Div)
Rev. C.02
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Characterization Curve (Contd.)
Chip Enable Transient Response
VEN
(1V/Div)
VEN
(2V/Div)
V OUT=1V
IOUT=0mA
VOUT
(500mV/Div)
VOUT=4.3V
IOUT=0mA
VOUT
(2V/Div)
10µS/Div
40µS/Div
Chip Enable Transient Response
Chip Enable Transient Response
VEN
(1V/Div)
VEN
(2V/Div)
VOUT=1V
IOUT=600mA
VOUT
(500mV/Div)
10µS/Div
Rev. C.02
Chip Enable Transient Response
VOUT=4.3V
IOUT=600mA
VOUT
(2V/Div)
40µS/Div
13
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Characterization Curve (Contd.)
Shut Down Curve Output Voltage
VEN
(1V/Div)
Shut Down Curve Output Voltage
VEN
(2V/Div)
V OUT
(500mV/Div)
VOUT
(2V/Div)
V OUT=1V
IOUT=0mA
VOUT=4.3V
IOUT=0mA
40µS/Div
40µS/Div
Shut Down Curve Output Voltage
Shut Down Curve Output Voltage
VEN
(1V/Div)
VEN
(2V/Div)
V OUT
(500mV/Div)
VOUT=1V
IOUT=600mA
4µS/Div
VOUT
(2V/Div)
VOUT=4.3V
IOUT=600mA
20µS/Div
PSRR vs Frequency
100
90
80
PSRR (dB)
70
60
50
40
30
20
10
0
100
1K
10K
100K
1M
Frequency (Hz)
14
Rev. C.02
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Tape and Reel Dimension
SOP-8
P0
PIN 1
W
AME
AME
P
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Pitch (P0)
Part Per Full Reel
Reel Size
SOP-8
12.0±0.1 mm
8.0±0.1 mm
4.0±0.1 mm
2500pcs
330±1 mm
SOT-25
P0
W
AME
AME
PIN 1
P
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Pitch (P0)
Part Per Full Reel
Reel Size
SOT-25
8.0±0.1 mm
4.0±0.1 mm
4.0±0.1 mm
3000pcs
180±1 mm
Rev. C.02
15
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Package Dimension
SOP-8
Top View
Side View
C
E
H
L
PIN 1
D
Front View
o
e
A
A1
A2
7 (4X)
B
SOT-25
16
Rev. C.02
AME
High PSRR, Low Noise, 600mA
CMOS Regulator
AME8855A
n Lead Pattern (Contd.)
SOT-25
2.40 BSC
1.00 BSC
0.70 BSC
0.95 BSC
Note:
1. Lead pattern unit description:
BSC: Basic. Represents theoretical exact dimension or
dimension target.
2. Dimensions in Millimeters.
3. General tolerance ± 0.05mm unless otherwise specified.
0.95 BSC
1.90 BSC
Rev. C.02
17
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. , August 2014
Document: TM001-DS8855A-C.02
Corporate Headquarter
AME, Inc.
8F, 12, WenHu St., Nei Hu
Taipei, Taiwan. 114
Tel: 886 2 2627-8687
Fax: 886 2 2659-2989