Datasheet
SLUS542F − OCTOBER 2003 − REVISED JULY 2009
2
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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, V
IN
120 V
Supply voltage, V
DD
(I
DD
< 10 mA) 16.5 V
Analog inputs FB, CS, SYNC, LINEOV, LINEUV
−0.3 to (V
REF
+ 0.3)
not to exceed 6
V
Output source current (peak), I
O_SOURCE
OUT, AUX
2.5
A
Output sink current (peak), I
O_SINK
OUT, AUX
−2.5
A
Operating junction temperature range, T
J
−55 to 150
°C
Storage temperature, T
stg
−65 to 150
°C
ESD rating
Human body model, (HBM) 2000
V
ESD rating
Change device model (CDM) 500
V
Lead temperature, T
sol,
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 NOM MAX UNIT
Line input voltage, V
IN
18 110 V
Supply voltage, V
DD
8.5 12.0 16.0 V
Supply bypass capacitance 1 µF
Timing resistance, R
ON
= R
OFF
(for 250-kHz
operation)
75 kΩ
Operating junction temperature, T
J
−40 105 °C
Reference bypass capacitance, C
REF
0.1 1 µF
ORDERING INFORMATION
PART NUMBERS
T
A
APPLICATION
AUX
OUTPUT
POLARITY
CS
THRESHOLD
(INCLUDES
SLOPE COM-
PENSATION)
110-V START-UP
CIRCUIT
SOIC−16
(D)
TSSOP−16
(PW)
DC−DC
P-Channel
0.75 V Yes UCC2891D UCC2891PW
−40°C to 125°C
DC-DC/Sec. Side
P-Channel
1.27 V No UCC2892D UCC2892PW
−40°C to 125°C
DC−DC
N-Channel
0.75 V Yes UCC2893D UCC2893PW
Off−Line
N-Channel
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).