Datasheet

UC1835 UC1836
UC2835 UC2836
UC3835 UC3836
SOIC-16 (TOP VIEW)
DW Package
CONNECTION DIAGRAMS
PACKAGE PIN FUNCTION
FUNCTION PIN
N/C 1
+V
IN 2
+V
IN 3
N/C 4
Compensation/
Shutdown
5
N/C 6
Ground 7
N/C 8
N/C 9
Driver Source 10
N/C 11
V
OUT Sense 12
N/C 13
N/C 14
Driver Sink 15
N/C 16
Current Limit (-) 17
N/C 18
Sense Resistor Out 19
Sense Resistor Out 20
DIL-8, SOIC-8 (TOP VIEW)
N or J Package, D Package
PLCC-20, LCC-20
(TOP VIEW)
Q, L Packages
Input Supply Voltage (+VIN) . . . . . . . . . . . . . . . . –1.0V to + 40V
Driver Output Current (Sink or Source) . . . . . . . . . . . . . 600mA
Driver Source to Sink Voltage . . . . . . . . . . . . . . . . . . . . . + 40V
Maximum Current Through Sense Resistor. . . . . . . . . . . . . . 4A
V
OUT Sense Input Voltage . . . . . . . . . . . . . . . . . . –.3V to + 40V
Power Dissipation at T
A = 25°C (Note 2) . . . . . . . . . . . 1000mW
Power Dissipation at T
C = 25°C (Note 2). . . . . . . . . . . 2000mW
Operating Junction Temperature . . . . . . . . . . . -55°C to +150°C
Storage Temperature. . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Lead Temperature (Soldering, 10 Seconds) . . . . . . . . . . 300°C
Note 1: Voltages are referenced to ground, (Pin 3). Currents are
positive into, negative out of, the specified terminals.
Consult Packaging Section of Databook for thermal
considerations and limitations of packages.
ELECTRICAL CHARACTERISTICS:
Unless otherwise stated, specifications hold for TA = 0°C to + 70°C for the
UC3835/6, –25°C to + 85°C for the UC2835/6, and –55°C to +125°C for the
UC1835/6, +V
IN = 6V, Driver Source= 0V, Driver Sink = 5V, TA = TJ.
PARAMETER TEST CONDITIONS MIN. TYP. MAX. UNITS
Input Supply
Supply Current +V
IN = 6V 2.75 4.0 mA
+V
IN = 40V 3.75 6.0 mA
UVLO Threshold +V
IN Low to High, VOUT Sense = 0V 3.9 4.4 4.9 V
Threshold Hysteresis 0.1 0.35 V
Reverse Current +V
IN = -1.0V, Driver Sink Open 6.0 20 mA
Regulating Voltage and Error Amplifier (UC1835 Family Only)
Regulating Level at V
OUT Sense (VREG) Driver Current = 10mA, TJ = 25°C 4.94 5.0 5.06 V
Over Temperature 4.9 5.1 V
Line Regulation +V
IN = 5.2V + 35V 15 40 mV
Load Regulation Driver Current = 0 to 250mA 6.0 25 mV
Bias Current at V
OUT Sense VOUT Sense = 5.0V 75 125 210 µA
Error Amp Transconductance ±100µA at Compensation/Shutdown Pin 0.8 1.3 2.0 mS
Maximum Compensation Output Current Sink or Source, Driver Source Open 90 200 260 µA
ABSOLUTE MAXIMUM RATINGS (Note 1)
2