UC28023
UC28025
SLUS557B − MARCH 2003 − REVISED APRIL 2004
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(1)
UC28023
Input voltage range,
Output current, IOUT(DC)
Peak output current, pulsed 0.5 ms IOUT(pulsed)
Capacitive load, CLOAD
INV, NI, RAMP
Analog inputs
Output current, IREF
Output current, ICLOCK
Soft-start sink current, ISINK_SS
Output current, IOUT(EA)
Oscillator charging current, IOSC_CHG
Power Dissipation at TA = 25°C (all packages)
Operating junction temperature range, TJ
Storage temperature, Tstg
SS, ILIM/SD
VREF
CLOCK
SS
EAOUT
RT
INV, NI, RAM
SS, ILIM/SD
VREF
CLOCK
SS
EAOUT
RT
VC, VCC
OUT
OUT
UC28025
VC, VCC
OUTA, OUTB
OUTA, OUTB
RATING
30
±0.5
±2.0
200
−0.3 V to 7 V
±2.0
10
−5
5
20
−5
1
−55 to 150
−65 to 150
°C
C
W
mA
UNIT
V
A
A
pF
A
A
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds, Tsol
300
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is
not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltages are with respect to
GND. All currents are positive into and negative out of the specified terminal.
UC28023
N PACKAGE
(TOP VIEW)
UC28023
DW PACKAGE
(TOP VIEW)
INV
NI
EAOUT
CLOCK
RT
CT
RAMP
SS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VREF
VCC
OUT
VC
PGND
ILIMREF
GND
ILIM/SD
INV
NI
EAOUT
CLOCK
RT
CT
RAMP
SS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VREF
VCC
OUT
VC
PGND
ILIMREF
GND
ILIM/SD
UC28025
N PACKAGE
(TOP VIEW)
UC28025
DW PACKAGE
(TOP VIEW)
INV
NI
EAOUT
CLOCK
RT
CT
RAMP
SS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VREF
VCC
OUTB
VC
PGND
OUTA
GND
ILIM/SD
INV
NI
EAOUT
CLOCK
RT
CT
RAMP
SS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VREF
VCC
OUTB
VC
PGND
OUTA
GND
ILIM/SD
2
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