ap1623sla ETC-unknow, ap1623sla Datasheet

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ap1623sla

Manufacturer Part Number
ap1623sla
Description
Control Step-down Switching Regulator-converter
Manufacturer
ETC-unknow
Datasheet
1.AP1623SLA.pdf (6 pages)
PWM Control Step-Down Switching Regulator-Converter
- Low current consumption:
- Input voltage: 2.5V to 16V.
- Output voltage: 1.8V & Adjustable to 6V.
- Duty ratio: 0% to 100% PWM control
- Oscillation frequency: 180KHz typ.
- Soft-start function: 8ms typ.
- With a power-off function.
- Built-in internal SW P-channel MOS
- SOP-8L Package.
- On-board power supplies of battery devices for
- Power supplies for audio equipment, including
- Fixed voltage power supply for cameras, video
- Power supplies for microcomputers.
- Conversion from four Ni-H or Ni-Cd cells or two
- Conversion of AC adapter input to 5V/3V.
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.
In operation: 60µA max.
Power off: 0.5µA max.
portable telephones, electronic notebooks, PDA,
and other hand-held sets.
portable CD players and headphone stereo
equipment.
equipment and communications equipment.
lithium-ion cells to 3.3V/3V.
Features
Applications
Pin Assignments
ON/OFF
V
PV
OUT
V
CC
CC
1
2
3
4
AP1623
8
7
6
5
Vss
Vss
SW
SW
1/6
AP1623 consists of CMOS step-down switching
regulator-controllers with PWM control. These devices
include a reference voltage source, oscillation circuit,
error amplifier, internal PMOS and etc.
AP1623 provides low-ripple power, high efficiency,
and excellent transient characteristics. The PWM
control circuit is able to very the duty ratio linearly
from 0 up to 100. This converter also contains an
error amplifier circuit as well as a soft-start circuit that
prevent s overshoot at startup.
With the addition of an internal P-channel Power MOS,
a coil, capacitors, and a diode connected externally,
these ICs can function as step-down switching
regulators. They serve as ideal power supply units for
portable devices when coupled with the SOP–8L
mini-package, providing such outstanding features as
low current consumption. Since this converter can
accommodate an input voltage of up to 16V, it is also
ideal when operating via an AC adapter.
ON/OFF
Name
PV
V
General Description
Pin Descriptions
V
SW
V
OUT
CC
SS
CC
5、6
7、8 GND Pin
Pin
1
2
3
4
Output voltage monitoring pin
Power-off pin
H: Normal operation
L: Step-down operation
stopped
IC signal power supply pin
IC power supply pin
Switch Pin. Connect external
inductor/diode here. Minimize
trace area at this pin to reduce
EMI.
(Step-down operation)
(All circuits deactivated)
Description
AP1623
Rev. 0.1 Feb 10, 2004

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ap1623sla Summary of contents

Page 1

PWM Control Step-Down Switching Regulator-Converter Features - Low current consumption: In operation: 60µA max. Power off: 0.5µA max. - Input voltage: 2.5V to 16V. - Output voltage: 1.8V & Adjustable to 6V. - Duty ratio 100% PWM control ...

Page 2

PWM Control Step-Down Switching Regulator-Converter Ordering Information Package S: SOP-8L Block Diagram PVCC VCC Absolute Maximum Ratings Symbol * pin voltage pin voltage ...

Page 3

PWM Control Step-Down Switching Regulator-Controllers Electrical Characteristics Symbol Parameter *1 V (E) Output voltage OUT V Input voltage IN I Switch Current SW I Current consumption 1 SS1 I Current consumption during power off SSS ∆V Line regulation OUT1 ∆V ...

Page 4

PWM Control Step-Down Switching Regulator-Controllers Typical Application Circuit （1） Normal Application VCC VCC ON/OFF （2） Application with Short Circuit Protection V 3.3V~16V VCC 1N4148 for above 5V Vin and Schottky for ...

Page 5

PWM Control Step-Down Switching Regulator-Controllers Function Description PWM Control (AP1623 Series) The AP1623 consists of DC/DC converters that employ a pulse-width modulation (PWM) system. In converters of the AP1623, the pulse width varies in a range from 0 to 100, ...

Page 6

PWM Control Step-Down Switching Regulator-Controllers Marking Information Package Information Package Type: SOP- (4X) e Dimensions In Millimeters Symbol Min. A 1.40 A1 0.10 A2 1.30 B 0.33 C 0.19 D 4.80 E 3.70 − 5.79 L ...

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