Diodes AP133 User Manual
AP133
300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT
LOW DROPOUT LINEAR REGULATOR
Features
• 300mA Low Dropout Regulator with EN
• Very low I
• Wide input voltage range: 2V – 6V
• Adjustable output: 1V – 5V
• High PSRR: 65dB at 1kHz
• Ultra-fast start-up time: 25µs
• Stable with low ESR, 1µF ceramic output capacitor
• Excellent Load/Line Transient Response
• Low dropout: 350mV at 300mA
• Current limit protection
• Short circuit protection
• Thermal shutdown protection
• Ambient temperature range: -40ºC to 85°C
• SOT25 and DFN2020- 6: Available in “Green ” Molding
Compound (No Br, Sb)
• Lead Free Finish/RoHS Compliant (Note 1)
: 40µA
Q
Applications
• Cellular Phones
• Smart Phones, PDAs
• MP3/MP4
• Bluetooth head set
• Low power application
Description
The AP133 is a 300mA, adjustable output voltage, low dropout
linear regulator. The device includes pass element, error
amplifier, band-gap, current limit and thermal shutdown circuitry.
The device is turned on when EN pin is set to logic high level.
The characteristics of low dropout voltage and less quiescent
current make it good for low power applications, for example,
battery powered devices. The typical quiescent current is
approximately 40μA from zero to maximum load.
Built-in current-limit and thermal-shutdown functions prevent
IC from damage in fault conditions.
The AP133 is available in SOT25 and DFN2020-6 packages.
Ordering Information
AP 133 - XX G - 7
Package
W : SOT25
SN : DFN2020-6
Device
Package
Code
AP133-WG-7 W SOT25 3000/Tape & Reel -7
AP133-SNG-7 SN DFN2020-6 3000/Tape & Reel -7
Notes: 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
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf
AP133 Rev. 6 1 of 15 FEBRUARY 2009
Packaging
(Note 2)
.
.
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Green
G : Green
Packing
7 : Tape & Reel
7” Tape and Reel
Quantity Part Number Suffix
Pin Assignment
(Top View)
IN
1
AP133
300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT
LOW DROPOUT LINEAR REGULATOR
(Top View)
5
OUT
EN
1
6
ADJ
2
GND
EN ADJ
SOT25
43
Pin Descriptions
Pin Name
IN 1 3
GND 2 2 Ground
EN 3 1 Enable input, active high
ADJ 4 6 Output feedback pin
NC 5 No connection
OUT 5 4
Pin Number
SOT25 DFN2020-6
Voltage input pin. Bypass to ground through at least 0.1µF
capacitor
Voltage output pin. Bypass to ground through 1µF ceramic
capacitor
2
GND
3
IN
DFN2020-6
Description
5
NC
OUT
4
AP133 Rev. 6 2 of 15 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT
Functional Block Diagram
AP133
LOW DROPOUT LINEAR REGULATOR
IN
EN
Typical Application Circuit
V
IN
1uF
Enable
IN
EN
Gate
Driver
AP133
GND
Current Limit
and Thermal
Shutdown
0.8V
OUT
ADJ
R1
R2
OUT
FB
GND
V
OUT
1uF
⎛
⎜
1
VV
REFOUT
⎜
⎝
⎞
R
1
⎟
+=
⎟
R
2
⎠
AP133 Rev. 6 3 of 15 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
AP133
300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT
LOW DROPOUT LINEAR REGULATOR
Absolute Maximum Ratings
Symbol Parameter Ratings Unit
VIN Input Voltage 7 V
OUT, ADJ, EN Voltage VIN + 0.3 V
Continuous Load Current Internal Limited
TOP Operating Junction Temperature Range -40 ~ 125 °C
TST Storage Temperature Range -65 ~150 °C
PD Power Dissipation (Note 3)
SOT25 740 mW
DFN2020-6 900 mW
TJ Maximum Junction Temperature 150 °C
Recommended Operating Conditions
Symbol Parameter Min Max Unit
V
I
OUT
T
Notes: 3. Ratings apply to ambient temperature at 25°C
AP133 Rev. 6 4 of 15 FEBRUARY 2009
Input voltage (No t e 4) 2 6 V
IN
Output Current 0 300 mA
Operating Ambient Temperature -40 85
A
4. At V
< 2.2V and TA< -20°C, the output current capability may be reduced.
IN
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°C
⎯
⎯
AP133
300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT
LOW DROPOUT LINEAR REGULATOR
Electrical Characteristics
= 25oC, V
(T
A
Symbol Parameter Test Conditions Min Typ. Max Unit
I
Q
I
SHDN
I
LEAK
V
Dropout
V
REF
I
ADJ
V
OUT
ΔV
OUT
/ΔV
/V
IN
ΔV
OUT
/V
OUT
tST
PSRR
I
SHORT
I
LIMIT
V
IL
V
IH
I
EN
T
SHDN
T
HYS
θ
JA
θ
JC
AP133 Rev. 6 5 of 15 FEBRUARY 2009
= V
OUT
+1V, C
IN
Input Quiescent Current I
Input Shutdown Current VEN = 0V, I
Input Leakage Current VEN = 0V, OUT grounded
Dropout Voltage
ADJ reference voltage I
ADJ leakage
= 1uF, C
IN
OUT
= 1uF, V
= 2V, unless oth erwise stated)
EN
= 0~300mA
OUT
= 0
OUT
V
≥ 1.5V, I
OUT
= 0 0.8 V
OUT
= 300mA
OUT
40 60 uA
⎯
1 uA
⎯
1 uA
350 450 mV
1 uA
Output Voltage Accuracy -2 2 %
Line Regulation
Load Regulation I
Start-up Time
PSRR 1kHz, I
Short-circuit Current V
Current limit V
= V
V
IN
I
OUT
OUT
V
EN
I
OUT
= 5.0V, V
IN
OUT
+1V to 5.5V,
OUT
= 1mA
0.05 %/V
from 1mA to 300mA -1 1 %
= 0V to 2.0V,
= 300mA
= 0mA 65 dB
OUT
< 0.2V 120 mA
OUT
= 3V, R
= 3Ω 400 600 mA
OUT
25 us
EN Input Logic Low Voltage 0.4 V
EN Input Logic High Voltage 1.4 V
EN Input leakage V
= 0V or 5.5V -1 1 uA
EN
Thermal shutdown threshold 145
Thermal shutdown hysteresis 20
Thermal Resistance
Junction-to-Ambient
Thermal Resistance
Junction-to-Case
SOT25
DFN2020-6 142
SOT25 41
DFN2020-6 36
Device mounted on FR-4
substrate , 2oz copper, with
minimum recommended pad
layout.
176
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°C
°C
o
C/W
o
C/W
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