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ANPEC

APW7251 Datasheet Preview

APW7251 Datasheet

Boost and Dual LDO

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APW7251/A
Boost and Dual LDOs with POK
Features
General Description
Wide Input Voltage from 3V to 5.5V
The APW7251 contains a PWM Boost converter, a 1.8V
Built-in Soft-start
linear regulator and a 3.3V linear regulator.
B oo s t Co n ve r te r F ix e d Out p ut Vo lt a ge : The PWM boost converter is a high frequency step-up
APW7251:13.5V
DC/DC converter. Its output voltage is set by an internal
APW7251A:12.3V
feedback divider at 13.5V and 12.3V.
<1uA Quiescent Current During Shutdown
Boost Converter in PFM Mode
The regulator is a P-channel low dropout linear regulator
with POK which needs only one input voltage from 3 to 5.
5V, and delivers current up to 10mA to set output voltage.
Internal Switch Current Limit : 250 mA
Typical dropout voltage is 450mV at 150mA loading for 1.
High Efficiency at 3.3V to 18V/10mA
8V output, and 100mV at 150mA loading for 3.3V output.
Dual LDOs With POK
The APW7251 has power-on-reset and soft start func-
High PSRR: 70dB at 1KHz
tions to prevent wrong operation and limit the surge cur-
Low Dropout Voltage:
- 450mV at 150mA (LDO1_1.8V)
- 100mV at 150mA (LDO2_3.3V)
rent during power-on or start-up. It also has thermal shut-
down function to protect the device against over-
temperature.
- 100mV at 150mA (LDO2_3.2V_APW7251A)
2x2mm TQFN-12 Packages
Lead Free and Green Devices Available (RoHS
Compliant)
Pin Configuration
Applications
Touch Panel
Simplified Application Circuit
12
11
10
LDO2 1
9 PGND
VIN_L 2
BottoGmNDView
8 LX
VIN_P
LX
VIN_L
EN_PWM VOUT
EN_LDO POK
LDO 1 LDO 2
PGND GND
LDO1 3
7 VIN_P
4
5
6
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
1
Rev. A.5 - Jan., 2018
www.anpec.com.tw




ANPEC

APW7251 Datasheet Preview

APW7251 Datasheet

Boost and Dual LDO

No Preview Available !

APW7251/A
Ordering and Marking Information
A P W 7251/A
A ssem bly M aterial
H andling C ode
Tem perature R ange
Package Code
Package Code
QB : TQFN 2x2-12
O perating A m bient Tem perature R ange
I : -40 to 85oC
H andling C ode
TR : Tape & Reel
A ssem bly M aterial
G : H alogen and Lead F ree D evice
APW 7251 QB:
7251
X
X - D ate C ode
APW 7251A QB:
W 51A
X
X - D ate C ode
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for
MSL classification at lead-free peak reflow temperature. ANPEC defines Greento mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Absolute Maximum Ratings (Note 1)
Sym bol
P arame ter
Ra ting
Unit
VIN
VIN to GND Voltage
-0.3 ~ 6
V
VSW
SW to GND Vo lta ge
>20n s
<20n s
- 0.3 ~ V IN+0 .3
V
3~8
V
TJ
TSTG
TSD R
EN, POK,Vo ut to GND Voltage
Maximum Junctio n Temp erature
Storag e Tempe rature Range
Maximum Lead S olde ring Temperature (1 0 Second s)
-0.3 ~ 7
V
-4 0 ~ 150
oC
-6 5 ~ 150
oC
2 60
oC
Note1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recom-
mended operating conditions" is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability
Thermal Characteristics
Symbol
Parameter
Typical Value
Junction-to-Ambient Resistance in free air
θJA
TQFN2x2-12
165
Note 2: θJA is measured with the component mounted on a high effective thermal conductivity test board in free air.
Unit
oC/W
Copyright © ANPEC Electronics Corp.
2
Rev. A.5 - Jan., 2018
www.anpec.com.tw



Part Number APW7251
Description Boost and Dual LDO
Maker ANPEC
Total Page 3 Pages
PDF Download

APW7251 Datasheet PDF





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