ap1625wla ETC-unknow, ap1625wla Datasheet
ap1625wla
Manufacturer Part Number
ap1625wla
Description
Pwm/pfm Dual Mode Step-down Dc/dc Controller
Manufacturer
ETC-unknow
Datasheet
1.AP1625WLA.pdf
(5 pages)
PWM/PFM Dual Mode Step-down DC/DC Controller
- Input voltage range:2.2V~8V（V
- Adjustable version（±2.5%）
- Oscillator frequency: 270KHz（±15%）
- High Efficiency: 92%（typ .）
- Stand-by capability: I
- Soft-start time set-up externally type possible
- Output voltage type possible（FB）
- Package: SOT23-5
● Electronic Information Organizers
● Palmtops
● Cellular and portable phones
● Portable Audio Systems
● Various Multi-function Power Supplies
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Pin Assignment
Features
Applications
V
FB
OUT
5
1
(Top View)
SOT23-5
STB
V
＝3µA.（max .）
2
DD
GND
CE
4
3
OUT
type）
1/5
The AP1625 series are multi-functional step-down
DC/DC converters with built-in speed, low ON
resistance drivers. A more than 1A output current is
possible using an externally connected transistor,
coil, diode and capacitor.
Output voltage is set-up by external resistor. （ ±2.5%
accuracy）.
With a 270KHz switching frequency, the size of the
external components can be reduced.
Control switches from PWM to PFM during light
loads with the AP1625 （PWM/PFM switchable） and
the series is highly efficient from light loads to large
output currents.
In relation to soft-start time external capacitor
regulated types.
During stand-by time （CE pin “LOW”）,current
consumption is reduced to less than 0.5µA.
With U.V.L.O internal, the external MOSFET. Will
be forcibly switched off if used below the stipulated
voltage.
Pin No.
Pin Descriptions
1
2
3
4
5
General Descriptions
Name
V
GND Ground
V
Pin
CE
FB
OUT
DD
External PMOSFET Connection
Power Supply
Chip Enable
Soft-start capacitor connection
Feedback pin
Function
AP1625
Rev.1.1 May.27, 2004
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