HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UNISONIC TECHNOLOGIES CO., LTD
UC3844/45
LINEAR INTEGRATED CIRCUIT
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
D...
Description
UNISONIC TECHNOLOGIES CO., LTD
UC3844/45
LINEAR INTEGRATED CIRCUIT
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
DESCRIPTION
The UTC UC3844/3845 are high performance fixed frequency current mode controllers that specifically designed for Off-Line and DC to DC converter applications with minimal external parts count.
The differences between UC3844 and UC3845 are the maximum duty cycle ranges and under-voltage lockout thresholds. The UC3844 ideally suited to off-line applications with UVLO thresholds of 16V(ON) and 10V(OFF), and UC3845 has UVLO thresholds of 8.5V(ON) and 7.6V(OFF) for lower voltage applications.
FEATURES
* Operation output switching frequency up to 500 kHz * Automatic feed forward compensation * Latching PWM for cycle-by-cycle current limiting * High current totem pole output * Internally trimmed reference with under voltage lockout * UVLO with hysteresis * Low startup and operating current
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UC3844L-D08-T
UC3844G-D08-T
UC3844L-S08-R
UC3844G-S08-R
UC3845L-D08-T
UC3845G-D08-T
UC3845L-S08-R
UC3845G-S08-R
Package
DIP-8 SOP-8 DIP-8 SOP-8
Packing
Tube Tape Reel
Tube Tape Reel
UC3844G-D08-T
(1)Packing Type (2)Package Type (3)Green Package
(1) T: Tube, R: Tape Reel (2) D08: DIP-8, S08: SOP-8 (3) G: Halogen Free and Lead Free, L: Lead Free
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QW-R103-010.L
UC3844/45
MARKING
PACKAGE
DIP-8
UC3844
SOP-8
PIN ...
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