NOT RECOMMENDED FOR NEW DESIGN - USE
AP7361C
AP7361
1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE
Description
The AP7361 is a 1A, adjustable and fixed output voltage, ultra-low
dropout linear regulator with enable. The device includes pass
element, error amplifier, band-gap reference, current limit and thermal
shutdown circuitry. The device is turned on when the EN pin is set to
logic high level.
The characteristics of the low dropout voltage and low quiescent
current make it suitable for low to medium power applications, for
example, laptop computers, audio and video applications, and battery
powered devices. The typical quiescent current is approximately
70µA. Built-in current-limit and thermal-shutdown functions prevent
IC from damage in fault conditions.
The AP7361 is available in U-DFN3030-8, SOT89-5, SOT223, TO252
and SO-8EP package.
Pin Assignments
(Top View)
OUT 1
NC 2
ADJ/NC 3
GND 4
GND
8
IN
7
NC
6
NC
5
EN
U-DFN3030-8
( Top View )
3
2
2
1
( Top View )
3
2
1
TO252/TO252R
Features
Wide input voltage range: 2.2V - 6V
150mV Very Low Dropout at 300mA Load
500mV Very Low Dropout at 1A Load
Low Quiescent Current (I
Q
): 70µA Typical
Adjustable Output Voltage Range: 1V to 5.0V
Fixed Output Options: 1V to 3.3V
Very-Fast Transient Response
High PSRR
Accurate Voltage Regulation
Current Limiting and Short Circuit Protection
Thermal Shutdown Protection
Stable with Ceramic Output Capacitor
2.2µF
Ambient Temperature Range -40°C to +85°C
U-DFN3030-8, SOT89-5, SOT223/SOT223R, TO252/TO252R
and SO-8EP
Available in “Green” Molding Compound (No Br, Sb)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
SOT223/SOT223R
(Top View)
EN 1
GND 2
ADJ/NC 3
5 OUT
GND
4 IN
OUT
1
EN
NC
GND
2
3
4
(Top View)
8
7
6
5
IN
NC
NC
NC
SOT89-5
SO-8EP
Applications
Servers and Laptops
FPGA and DSP Core or I/O Power
TV, and Home Electrical Appliances
Battery-Powered Devices
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AP7361
Document number: DS33626 Rev. 11 - 3
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March 2017
© Diodes Incorporated
AP7361
Typical Applications Circuit
V
IN
IN
OUT
V
OUT
V
IN
IN
OUT
V
OUT
AP7361
1uF
Enable
EN
GND
4.7uF
1uF
Enable
EN
AP7361
ADJ
GND
R1
4.7uF
R2
Fixed Version
U-DFN3030-8, SOT89-5 and SO-8EP
Adjustable Output
U-DFN3030-8 and SOT89-5
V
IN
IN
OUT
V
OUT
AP7361
1uF
4.7uF
GND
Fixed Version
TO252, SOT223
Pin Descriptions
Pin
Name
IN
OUT
GND
ADJ
EN
NC
U-DFN3030-8
8
1
4
3
5
2, 6, 7
Pin Number
SOT89-5 TO252 TO252R SOT223 SOT223R
4
5
2
3
1
NA
1
3
2
NA
NA
NA
3
2
1
NA
NA
NA
1
3
2
NA
NA
NA
3
2
1
NA
NA
NA
SO-8EP
8
Function
The input of the regulator. Bypass to ground through at
least 1µF ceramic capacitor.
The output of the regulator. Bypass to ground through
at least 2.2µF ceramic capacitor. For improved ac load
1
response a larger capacitor is recommended.
4
Ground
Adjustable voltage version only – a resistor divider from
this pin to the OUT pin and ground sets the output
NA
voltage.
2
Enable input, active high
3, 5, 6, 7 No connection
AP7361
Document number: DS33626 Rev. 11 - 3
2 of 22
www.diodes.com
March 2017
© Diodes Incorporated
AP7361
Functional Block Diagram
IN
Current Limit
and Thermal
Shutdown
OUT
IN
Current Limit
and Thermal
Shutdown
OUT
EN
Gate
Driver
EN
R
Gate
Driver
ADJ
0.8V
R
0.8V
GND
GND
Fixed Version U-DFN3030-8, SOT89-5 and SO-8EP
Adjustable Version U-DFN3030-8 and SOT89-5
IN
Current Limit
and Thermal
Shutdown
OUT
Gate
Driver
R
0.8V
R
GND
Fixed Version
TO252, SOT223
AP7361
Document number: DS33626 Rev. 11 - 3
3 of 22
www.diodes.com
March 2017
© Diodes Incorporated
AP7361
Absolute Maximum Ratings
(@T
A
= +25°C, unless otherwise specified.)
Symbol
ESD HBM
ESD MM
V
IN
T
J
T
ST
P
D
Parameter
Human Body Model ESD Protection
Machine Model ESD Protection (Note 5)
Input Voltage
OUT, ADJ, EN Voltage
Operating Junction Temperature Range
Storage Temperature Range
Power Dissipation (Note 4)
U-DFN3030-8
TO252
SOT223
SOT89-5
SO-8EP
Ratings
>2
> 200
6.5
V
IN
+0.3
-40 to +150
-65 to +150
Internally limited by maximum junction
temperature of +150°C
1,700
1,250
1,100
800
1,190
Unit
KV
V
V
V
°C
°C
P
D
Power Dissipation (Note 4)
mW
Notes:
4. Ratings apply to ambient temperature at +25°C.
5. ESD MM rating at 150V for EN pin.
Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
Recommended Operating Conditions
(@T
A
= +25°C, unless otherwise specified.)
Symbol
V
IN
I
OUT
T
A
Note:
Parameter
Input Voltage
Output Current (Note 6)
Operating Ambient Temperature
Min
2.2
0
-40
Max
6.0
1.0
+85
Unit
V
A
C
6. The device maintains a stable, regulated output voltage without a load current. When the output current is large, attention should be given to the
limitation of the package power dissipation.
AP7361
Document number: DS33626 Rev. 11 - 3
4 of 22
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March 2017
© Diodes Incorporated
AP7361
Electrical Characteristics
Symbol
V
REF
I
ADJ
I
Q
I
SHDN
V
OUT
ΔVOUT
ΔVIN
VOUT
(@T
A
= +25°C, V
IN
= V
OUT
+1V, C
IN
= 1μF, C
OUT
= 4.7μF, V
EN
= V
IN
unless otherwise specified.)
Test Conditions
I
OUT
= 10mA, T
A
= +25°C
Enabled, I
OUT
= 0A
V
EN
= 0V, I
OUT
= 0A
I
OUT
= 100mA, T
A
= +25°C
I
OUT
= 100mA, -40°C ≤ T
A
≤ +85°C
Over V
IN
, I
OUT
, and T
A
V
IN
= V
OUT
+1V to
6V, I
OUT
= 100mA
I
OUT
from 1mA to 1A
I
OUT
= 300mA
I
OUT
= 500mA
I
OUT
= 1A
0
1.0
V
IN
= 6V, V
EN
= 0V or 6V
V
IN
= V
OUT
+1V
V
IN
= V
OUT
+1V, Output Voltage < 15% V
OUT
f = 1KHz, I
OUT
= 100mA
f = 10KHz, I
OUT
= 100mA
V
OUT
= 3V, C
OUT
= 1µF, R
L
= 30Ω
I
OUT
= 100mA, -40°C ≤ T
A
≤ +85°C
60
-0.1
1.1
0.01
1.5
200
65
45
200
±130
150
20
U-DFN3030-8 (Note 9)
TO252 (Note 9)
SOT223 (Note 9)
SOT89-5 (Note 9)
SO-8EP (Note 9)
70
95
110
150
100
T
A
= +25°C
-40°C ≤T
A
≤ +85°C
-1.0
-1.0
0.5
0.5
150
250
500
-1
-1
-2
-3
±0.5
0.01
Min
Typ
0.8
0.1
70
0.05
0.5
90
1
1
2
3
0.1
0.2
1.0
1.0
200
350
700
0.3
V
IN
0.1
V
V
µA
A
mA
dB
µs
ppm/°C
°C
°C
mV
%/V
%
%
%
Max
Unit
V
µA
µA
µA
Parameter
FB Reference Voltage
ADJ Pin Leakage
Input Quiescent Current
Input Shutdown Current
Output Voltage Accuracy
Line Regulation
Load Regulation
V
OUT
/ V
OUT
I
OUT
from 1mA to 300mA
V
DROPOUT
V
IL
V
IH
I
EN
I
LIMIT
I
SHORT
PSRR
t
ST
ΔVOUT
ΔTA
VOUT
Dropout Voltage (Note 7)
EN Input Logic Low Voltage
EN Input Logic High Voltage
EN Input Leakage
Current Limit
Short-Circuit Current
Power Supply Rejection Ratio
(Note 8)
Start-Up Time
Output Voltage Temperature Coefficient
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
T
SHDN
T
HYS
θ
JA
Thermal Resistance Junction-to-Ambient
°C/W
Notes:
7. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its
nominal value. This parameter only applies to output voltages above 1.5V since minimum V
IN
= 2.2V.
8. For V
IN
2.5V and V
IN
= V
OUT
+1V. For V
IN
< 2.5V, the PSRR performance may be reduced.
9. Test condition: DFN3030E-8, SO-8EP device mounted on 2"x2", FR-4 substrate PCB, with minimum recommended pad on top layer and thermal vias to
bottom layer ground plane. TO252 device mounted on 2"x2" FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.
SOT223 the device is mounted on FR-4 substrate PC board, with minimum recommended pad layout. SOT89-5L device mounted on 1"x1" FR-4
substrate PC board, with minimum recommended pad layout.
AP7361
Document number: DS33626 Rev. 11 - 3
5 of 22
www.diodes.com
March 2017
© Diodes Incorporated
