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參數資料
| 型號： | FAN7556MX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | SMPS Controller |
| 中文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 243K |
| 代理商： | FAN7556MX |
2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.1
Features
Voltage Mode Control
Pulse by Pulse Current Limiting
Low External Components
Under Voltage Lockout ( UVLO): 9V/15V
Stand-by Current: Typ. 100uA
Power Saving Mode Current: Typ. 200uA
Operating Current: Typ. 7mA
Soft Start
On/off Control
Over Load Protection (OLP)
Over Current Protection (OCP)
Over Voltage Protection (OVP)
Wide Operating Frequency Range (20kHz ~ 500kHz)
Auto-Restart Function
Applications
Off-Line & DC-DC Converter
Description
The FAN7556 is a fixed frequency voltage mode PWM
controller. It is specially designed for off-line and DC-DC
converter applications with minimal external components.
These integrated circuits feature a trimmed oscillator for
precise duty cycle control, a temperature compensated
reference, an on/off control, a high gain error amplifier, a
current sensing comparator, and a high current totem-pole
output. The FAN7556 has various protection functions such
as an over load protection (OLP), an over current
protection(OCP), and an over voltage protection(OVP). The
FAN7556 is available in the 8DIP package as well as the
8SOP package.
Internal Block Diagram
OSC
5
6
2
4
4
7
3
1
FB
CT
Vcc
OUT
GND
I S
8
S/S
1.5V
+
3.5V
0.3V
14V
15/9V
UVLO
0.25V
OLP
6V
5uA
Vcc
PWM
UVLO-out
S
Q
R
CLK
SAVE
on
off
Vref
S
Q
R
1k
Vref
100uA
Vref
1mA
LA
S
R
Q
OVP
34V
COM-out
OVP-out
OCP
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
2V
_
COM
2.7V
3k
PWR
/
_
FAN7556
Voltage Mode PWM Controller
8-DIP
1
8-SOP
1
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相關代理商/技術參數 |
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| FAN7556N | 功能描述:電壓模式 PWM 控制器 PWM Control IC IVM RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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| FAN7563DTF | 功能描述:電池管理 Charger Controller Li-Ion RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| FAN7564 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Lithium-Ion Charger Controller |
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