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參數(shù)資料
| 型號： | HT82P604B |
| 廠商： | Holtek Semiconductor Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | DC-DC Converter |
| 中文描述： | DC - DC轉(zhuǎn)換 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 91K |
| 代理商： | HT82P604B |
Pin Assignment
Pin Description
Pin No.
Pin Name
I/O
Description
1
VSEN
I
This pin is connected to the converters output voltage. The
PGOOD and OVP comparator circuits use this signal to report
output voltage status and for overvoltage protection.
2
OCSET
I
Connect a resistor (R
OCSET
) from this pin to the drain of the up-
per MOSFET. R
OCSET
, an internal 200mA current source
(I
OCS
), and the upper MOSFET on-resistance (r
DS (ON)
) set the
converter over-current (OC) trip point.
=I
R
r
DS(ON)
An over-current trip cycles the soft-start function.
I
PEAK
OCS
OCSET
3
SS
O
Connect a capacitor from this pin to ground. This capacitor,
along with an internal 10 A current source, sets the soft-start
interval of the converter.
4~8
VID0~4
I
VID0-4 are the input pins to the 5-bit DAC. The states of these
five pins program the internal voltage reference (DACOUT).
The level of DACOUT sets the converter output voltage. It also
sets the PGOOD and OVP thresholds. Table 1 specifies
DACOUT for the 32 combinations of DAC inputs.
9, 10
COMP, FB
I
COMPandFBaretheavailableexternalpinsoftheerrorampli-
fier. The FB pin is the inverting input of the error amplifier and
the COMP pin is the error amplifier output. These pins are used
to compensate the voltage-control feedback loop of the con-
verter.
11
GND
P
Signal ground for the IC. All voltage levels are measured with
respect to this pin.
HT82P604B
2
March 23, 2000
Preliminary
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