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參數(shù)資料
| 型號： | AP1624WA |
| 英文描述： | PWM/PFM Dual Mode Step-up DC/DC Controller |
| 中文描述： | PWM / PFM切換雙模式升壓型DC / DC控制器 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 172K |
| 代理商： | AP1624WA |
AP1624
PWM/PFM Dual Mode Step-up DC/DC Controller
Features
- Input Voltage Range: 0.9~6V
- PWM/PFM Switching Control
- High Efficiency: 90%
- Oscillator Frequency: 300kHz
（±
15%
）
- Stand-by Current: I
STB
=3μA.
（
Typ.
）
-
Pb-Free
Package: SOT23-5
Applications
- 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.
Rev.1.1 Dec.23, 2004
1/7
General Descriptions
The AP1624 is multi-functional step-up DC/DC
controllers. Large output current is possible using
an externally connected N channel MOSFET, coil,
and diode.
Output voltage
（
V
OUT
）
is programmable with 1.23V
of standard voltage supply internal, and using
externally connected components, output voltage
（
FB
）
can be set up at will.
With a 300KHz switching frequency, the size of the
external components can be reduced.
Control switches from PFM to PWM during light
loads with the AP1624
（
PFM/PWM switchable
）
and
the series is highly efficient from light loads to large
output currents.
During stand-by time
（
CE pin “Low”
）
, current
consumption is reduced to 3μA.
Pin Descriptions
Pin
No.
Name
1
FB
Feedback pin
2
V
CC
IC Power Supply pin
Chip Enable:
H: Enable
L: Disable
4
GND
GND pin
5
EXT
External N-MOSFET Connection
Pin Assignment
1
3
CE
2
5
4
FB
V
CC
EXT
GND
SOT23-5
(TOP VIEW)
Pin
Function
3
CE
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