UCC2891, UCC2892
UCC2893, UCC2894
SLUS542F − OCTOBER 2003 − REVISED JULY 2009
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)
UNIT
Line input voltage, VIN
Supply voltage, VDD
Analog inputs
Output source current (peak), IO_SOURCE
Output sink current (peak), IO_SINK
Operating junction temperature range, TJ
Storage temperature, Tstg
Human body model, (HBM)
ESD rating
Change device model (CDM)
(IDD < 10 mA)
FB, CS, SYNC, LINEOV, LINEUV
OUT, AUX
120
16.5
−0.3 to (VREF + 0.3)
not to exceed 6
2.5
−2.5
−55 to 150
−65 to 150
2000
500
V
A
°C
V
V
V
Lead temperature, Tsol, 1,6 mm (1/16 inch) from case for 10 seconds
300
°C
(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. Currents are positive into and negative out of, the specified terminal.
RECOMMENDED OPERATING CONDITIONS
MIN
Line input voltage, VIN
Supply voltage, VDD
Supply bypass capacitance
Timing resistance, RON = ROFF (for 250-kHz
operation)
Operating junction temperature, TJ
Reference bypass capacitance, CREF
−40
0.1
18
8.5
1
75
105
1
12.0
NOM
MAX
110
16.0
UNIT
V
V
µF
kΩ
°C
µF
ORDERING INFORMATION
PART NUMBERS
AUX
OUTPUT
POLARITY
CS
THRESHOLD
(INCLUDES
SLOPE COM-
PENSATION)
0.75 V
P-Channel
N-Channel
1.27 V
0.75 V
TA
APPLICATION
110-V START-UP
CIRCUIT
SOIC−16
(D)
TSSOP−16
(PW)
DC−DC
DC-DC/Sec. Side
−40°C to 125°C
DC−DC
Yes
No
Yes
UCC2891D
UCC2892D
UCC2893D
UCC2891PW
UCC2892PW
UCC2893PW
Off−Line
1.27 V
No
UCC2894D
UCC2894PW
† The D and PW packages are available taped and reeled. Add R suffix to device type (e.g. UCC2891DR) to order quantities of 2,500
devices per reel (for the D package) and 2,000 devices per reel (for the PW package). Bulk quantities are 40 units per tube (for the D
package) and 90 units per tube (for the PW package).
2
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