AP7332
DUAL 300mA LOW QUIESCENT CURRENT FAST
TRANSIENT LOW DROPOUT LINEAR REGULATOR
Description
The AP7332 is 300mA, dual fixed output voltage, low dropout
linear regulator. The AP7332 includes the pass element,
error amplifier, band-gap, current limit and thermal shutdown
circuitry which protect the IC from damage in fault conditions.
The AP7332 has two enable pins (EN1 and EN2) to
independently turn the respective channel on when a logic
high level is applied.
The characteristics of low dropout voltage and low quiescent
current make it suitable for low power applications. The
typical quiescent current is approximately 60μA.
This device is available with fixed output options of
1.0V/1.0V, 1.0V/3.3V, 1.2V/1.8V, 1.2V/3.3V, 1.5V/2.8V,
1.5V/3.0V, 1.5V/3.3V, 1.8V/2.7V, 1.8V/2.8V, 1.8V/3.0V,
1.8V/3.3V, 2.5V/3.0V, 2.8V/3.3V and 3.3V/3.3V.
For other output options please contact our local sales
representative directly or through our distributor located in
your area.
The AP7332 is available in SOT26 and DFN2018-6
packages.
Pin Assignments
(Top View)
OUT2 1
GND 2
EN2 3
6 OUT1
5 IN
4 EN1
NEW PRODUCT
SOT26
(Top View)
IN
EN1
EN2
1
2
3
6
5
4
OUT1
OUT2
GND
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
300mA Low Dropout Regulator with EN
Very low IQ: 60µA
Wide input voltage range: 2V to 6V
Fixed output options: 1.0V to 3.3V
High PSRR: 65dB at 1kHz
Fast start-up time: 60µs
Stable with low ESR, 1µF ceramic output capacitor
Excellent Load/Line Transient Response
Low dropout: 300mV at 300mA
Current limit protection
Short circuit protection
Thermal shutdown protection
Ambient temperature range: -40ºC to 85°C
SOT26 and DFN2018-6: Available in “Green” Molding
Compound (No Br, Sb)
Lead Free Finish/RoHS Compliant (Note 1)
DFN2018-6
Applications
•
•
•
•
•
Cellular Phones
Smart Phones, PDAs
MP3/MP4
Bluetooth head set
Low power application
Note:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
AP7332
Document number: DS35132 Rev. 3 - 2
1 of 18
www.diodes.com
August 2011
© Diodes Incorporated
AP7332
DUAL 300mA LOW QUIESCENT CURRENT FAST
TRANSIENT LOW DROPOUT LINEAR REGULATOR
Typical Application Circuit
V
IN
VIN VOUT1
1uF
V
OUT1
1uF
V
OUT2
EN1 VOUT2
ON
OFF
1uF
EN2
GND
NEW PRODUCT
ON
OFF
Pin Descriptions
Pin Name
OUT2
GND
EN2
EN1
IN
OUT1
Pin Number
SOT26
1
2
3
4
5
6
DFN2018-6
5
4
3
2
1
6
Description
Voltage output 2. Bypass to ground through 1µF ceramic capacitor
Ground
Enable input 2, active high
Enable input 1, active high
Voltage input. Bypass to ground through at least 1µF capacitor
Voltage output 1. Bypass to ground through 1µF ceramic capacitor
AP7332
Document number: DS35132 Rev. 3 - 2
2 of 18
www.diodes.com
August 2011
© Diodes Incorporated
AP7332
DUAL 300mA LOW QUIESCENT CURRENT FAST
TRANSIENT LOW DROPOUT LINEAR REGULATOR
Functional Block Diagram
IN
Current Limit
and
Short Circuit
OUT 1
EN 1
Gate
Driver
NEW PRODUCT
Bandgap
Thermal
Shutdown
GND
EN 2
Gate
Driver
Current Limit
and
Short Circuit
OUT 2
AP7332
Document number: DS35132 Rev. 3 - 2
3 of 18
www.diodes.com
August 2011
© Diodes Incorporated
AP7332
DUAL 300mA LOW QUIESCENT CURRENT FAST
TRANSIENT LOW DROPOUT LINEAR REGULATOR
Absolute Maximum Ratings
Symbol
ESD HBM
ESD MM
V
IN
Parameter
Human Body Model ESD Protection
Machine Model ESD Protection
Input Voltage
OUT, EN Voltage
Continuous Load Current
T
OP
Operating Junction Temperature Range
Storage Temperature Range
Power Dissipation (Note 3)
Maximum Junction Temperature
SOT26
DFN2018-6
Ratings
8
400
6.5
V
IN
+ 0.3
Internal Limited
-40 ~ 125
-65 ~150
950
2200
150
°C
°C
mW
mW
°C
Unit
kV
V
V
V
NEW PRODUCT
T
ST
P
D
T
J
Recommended Operating Conditions
Symbol
V
IN
I
OUT
T
A
Notes:
Parameter
Input voltage
Output Current (Note 3)
Operating Ambient Temperature
Min
2
0
-40
Max
6
300
85
Unit
V
mA
°C
2. Ratings apply to ambient temperature at 25°C.
3. The device maintains a stable, regulated output voltage without a load current.
AP7332
Document number: DS35132 Rev. 3 - 2
4 of 18
www.diodes.com
August 2011
© Diodes Incorporated
AP7332
DUAL 300mA LOW QUIESCENT CURRENT FAST
TRANSIENT LOW DROPOUT LINEAR REGULATOR
Electrical Characteristics
(T
A
= 25 C, V
IN
= V
OUT
+1V, C
IN
= 1uF, C
OUT
= 1uF, V
EN
= V
IN
, unless otherwise stated)
Symbol
Parameter
Test Conditions
ADJ Reference Voltage
I
OUT
= 0mA
V
REF
(Adjustable version)
ADJ Leakage (Adjustable version)
I
ADJ
o
o
T
A
= -40 C to 85 C,
Output Voltage Accuracy
V
OUT
I
OUT
= 10% of I
OUT-Max
V
IN
= (V
OUT
+1V) to V
IN-Max
,
ΔV
OUT
/ΔV
IN
/V Line Regulation
V
EN
= V
IN
, I
OUT
= 1mA
V
IN
= (V
OUT
+1V) to V
IN-Max
,
ΔV
OUT
/V
OUT
Load Regulation
I
OUT
= 1mA to 300mA
V
OUT
< 2.5V, I
OUT
= 300mA
Dropout Voltage (Note 4)
V
Dropout
V
OUT
≥
2.5V, I
OUT
= 300mA
Input Quiescent Current (2 channels)
V
EN
= V
IN
, I
OUT
= 0mA
I
Q
Input Shutdown Current
V
EN
= 0V, I
OUT
= 0mA
I
SHDN
Input Leakage Current
V
EN
= 0V, OUT grounded
I
LEAK
V
EN
= 0V to 2.0V in 1μs,
Start-up Time
t
ST
I
OUT
= 300mA
V
IN
= [V
OUT
+1V]V
DC
+ 0.5V
ppAC
,
PSRR (Note 5)
PSRR
f = 1kHz, I
OUT
= 50mA
V
IN
= V
IN-Min
to V
IN-Max
,
Short-circuit Current
I
SHORT
V
OUT
= 1/4 target V
OUT
V
IN
= V
IN-Min
to V
IN-Max
,
Current limit
I
LIMIT
V
OUT
/R
OUT
= 1A
EN Input Logic Low Voltage
V
IN
= V
IN-Min
to V
IN-Max
V
IL
EN Input Logic High Voltage
V
IN
= V
IN-Min
to V
IN-Max
V
IH
EN Input Current
V
IN
= 0V or V
IN-Max
I
EN
Thermal shutdown threshold
T
SHDN
Thermal shutdown hysteresis
T
HYS
SOT26 (Note 6)
Thermal Resistance Junction-to-Ambient
θ
JA
DFN2018-6 (Note 7)
Notes:
o
Min
Typ.
0.8
0.1
Max
Unit
V
1
2
μA
%
%/V
%
mV
μA
μA
μA
μs
dB
mA
mA
-2
0.01
-0.6
350
250
60
0.1
0.1
150
60
65
120
400
1.4
-1
165
30
140
60
600
0.20
0.6
600
400
80
1
1
NEW PRODUCT
0.4
1
V
V
μA
°C
°C
o
C/W
4. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value.
5. This specification is guaranteed by design.
6. Test condition for SOT26: Device mounted on FR-4 substrate PC board, with minimum recommended pad layout
7. Test condition for DFN2018-6: Device mounted on FR-4 2-layer board,2oz copper, with minimum recommended pad on top layer and 3 vias to
bottom layer.
AP7332
Document number: DS35132 Rev. 3 - 2
5 of 18
www.diodes.com
August 2011
© Diodes Incorporated
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