HT82P604B データシートの表示（PDF） - Holtek Semiconductor
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HT82P604B Datasheet PDF : 7 Pages
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Preliminary
HT82P604B
Symbol
Parameter
VPGOOD
Lower Threshold
(VSEN/DACOUT)
Hysteresis
(VSEN/DACOUT)
PGOOD Voltage Low
Test Conditions
VCC
Conditions
12V VSEN Falling
12V
Upper and Lower
Threshold
12V IPGOOD=-5mA
Min. Typ. Max. Unit
89 ¾ 94 %
¾ 2 ¾%
¾ 0.5 ¾ V
Functional Description
Output voltage program
The output voltage of a HT82P604B converter
is programmed to discrete levels between 1.3V
and 3.5V. The voltage identification (VID) pins
program an internal voltage reference
(DACOUT) with a 5-bit digital-to-analog con-
verter (DAC). The level of DACOUT also sets
the PGOOD and OVP thresholds. Table 1 speci-
fies the DACOUT voltage for the 32 combina-
tions of open or short connections on the VID
pins. The output voltage should not be adjusted
while the converter is delivering power. Re-
move input power before changing the output
voltage. Adjusting the output voltage during
operation could toggle the PGOOD signal and
exercise the overvoltage protection.
Pin Name
Nominal
Output
VID4 VID3 VID2 VID1 VID0 Voltage
Dacout
0
1
1
1
1
1.30
0
1
1
1
0
1.35
0
1
1
0
1
1.40
0
1
1
0
0
1.45
0
1
0
1
1
1.50
0
1
0
1
0
1.55
0
1
0
0
1
1.60
0
1
0
0
0
1.65
0
0
1
1
1
1.70
0
0
1
1
0
1.75
0
0
1
0
1
1.80
Pin Name
Nominal
Output
VID4 VID3 VID2 VID1 VID0 Voltage
Dacout
0
0
1
0
0
1.85
0
0
0
1
1
1.90
0
0
0
1
0
1.95
0
0
0
0
1
2.00
0
0
0
0
0
2.05
1
1
1
1
1
0
1
1
1
1
0
2.1
1
1
1
0
1
2.2
1
1
1
0
0
2.3
1
1
0
1
1
2.4
1
1
0
1
0
2.5
1
1
0
0
1
2.6
1
1
0
0
0
2.7
1
0
1
1
1
2.8
1
0
1
1
0
2.9
1
0
1
0
1
3.0
1
0
1
0
0
3.1
1
0
0
1
1
3.2
1
0
0
1
0
3.3
1
0
0
0
1
3.4
1
0
0
0
0
3.5
Note: 0=connected to GND or VSS, 1=OPEN
Table 1 Output voltage program
5
March 23, 2000
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