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PDF AP1624 Data sheet ( Hoja de datos )
| Número de pieza | AP1624 | |
| Descripción | PWM/PFM Dual Mode Step-up DC/DC Controller | |
| Fabricantes | Anachip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AP1624 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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PWM/PFM Dual Mode Step-up DC/DC Controller
AP1624
Features
- Input Voltage Range: 0.9~6V
- PWM/PFM Switching Control
- High Efficiency: 90%
- Oscillator Frequency: 300kHz（±15%）
- Stand-by Current: ISTB=3µA.（Typ.）
- Pb-Free Package: SOT23-5
Applications
- Electronic Information Organizers
- Palmtops
- Cellular and portable phones
- Portable Audio Systems
- Various Multi-function Power Supplies
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 （VOUT）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 Assignment
Pin Descriptions
(TOP VIEW)
EXT GND
54
123
FB VCC CE
SOT23-5
Pin Pin
No. Name
Function
1 FB Feedback pin
2 VCC IC Power Supply pin
Chip Enable:
3 CE
H: Enable
L: Disable
4 GND GND pin
5 EXT External N-MOSFET Connection
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
1 page  
PWM/PFM Dual Mode Step-up DC/DC Controller
AP1624
Typical Performance Characteristics
AP1624 Load Regulation
12.5
12.4 Vcc=5V,Vout=12V
12.3
12.2
12.1
12
11.9
11.8
11.7
11.6
11.5
0 200 400 600 800
Load (mA)
1000
AP1624 Load Regulation
5
Vcc=3.3V,Vout=5V
4.95
4.9
4.85
4.8
4.75
4.7
4.65
4.6
0
200 400 600 800 1000
Load (mA)
1200
AP1624 Line Regulation
5.5
5.4
Vcc=3.3V,Vout=5V
5.3
5.2
5.1
5
4.9
4.8
4.7
4.6
4.5
2.5 3 3.5
Vcc (V)
4
AP1624 Load v.s. Frequency
350 Vcc = 3.3V
340
330
320
310
300
290
280
270
260
250
0 0.2 0.4 0.6 0.8 1
Load (A)
1.2
AP1624 Temperature v.s. Vout
10.0
9.8
Vcc=5V, Iout=300mA
9.6
9.4
9.2
9.0
8.8
8.6
8.4
8.2
8.0
-50 -25 0 25 50
Temperature (oC)
75
100
AP1624 Vcc v.s. Frequency
410
380
350
320
290
260
230
200
2.5 3 3.5 4 4.5 5
Vcc (V)
5.5
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Dec.23, 2004
5/7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet AP1624.PDF ] | |
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