US3012/3012A
ABSOLUTE MAXIMUM RATINGS
V5 supply Voltage ........................................... 7V
V12 Supply Voltage ............................................ 20V
Storage Temperature Range ................................. -65 TO 150°C
Operating Junction Temperature Range .......... 0 TO 125°C
PACKAGE INFORMATION
20 PIN WIDE BODY PLASTIC SOIC (W)
TOP VIEW
1
2
20
19
18
17
16
15
14
13
12
11
Ct
En
D0
D1
3
PGd
CS+
CS-
V5
D2
4
D3
5
SS
6
Gnd
Vfb
V12
HDrv
NC
7
NC
8
D4
9
LDrv
PGnd
10
qJA =85°C/W
ELECTRICAL SPECIFICATIONS
Unless otherwise specified ,these specifications apply over ,V12 = 12V, V5 = 5V and Ta=0 to 70°C. Typical values
refer to Ta =25°C. Low duty cycle pulse testing are used which keeps junction and case temperatures equal to the
ambient temperature.
PARAMETER
SYM TEST CONDITION
MIN
TYP
MAX
UNITS
VID Section
DAC output voltage
(note 1)
0.99Vs
Vs
1.01Vs
V
DAC Output Line Regulation
DAC Output Temp Variation
VID Input LO
0.1
0.5
0.4
%
%
V
VID Input HI
2
V
VID input internal pull-up
resistor to V5
27
kW
Power Good Section
Under voltage lower trip point
Under voltage upper trip point
UV Hysterises
Over voltage upper trip point
Over voltage lower trip point
OV Hysterises
Power Good Output LO
Power Good Output HI
Soft Start Section
Soft Start Current
Vout ramping down
Vout ramping up
0.89Vs
0.90Vs
0.92Vs
.02Vs
1.10Vs
1.08Vs
.02Vs
0.91Vs
V
V
V
V
V
V
V
V
.015Vs
1.09Vs
.025Vs
1.11Vs
Vout ramping up
Vout ramping down
.015Vs
4.8
.025Vs
0.4
RL=3mA
RL=5K pull up to 5V
CS+ =0V , CS- =5V
10
uA
Rev. 1.0
5/6/98
4-2
UNISEM [ UNISEM ]
