MITSUBISHI SEMICONDUCTOR < STANDERD LINEAR IC >
M62281P/FP M62281P/FP
GENERAL GENERAL PURPOSE PURPOSE CURRENT CURRENT M...
MITSUBISHI SEMICONDUCTOR < STANDERD LINEAR IC >
M62281P/FP M62281P/FP
GENERAL GENERAL PURPOSE PURPOSE CURRENT CURRENT MODE MODE PWM PWM CONTROL CONTROL IC IC DESCRIPTION
M62281P/FP is designed as a high speed current mode PWM control IC. This small10 pin package contains many functions and protection circuits allowing simpler peripheral circuit and compact set design. This IC can operate high speed switching (700kHz max.) with high speed current sense comparator and current limiting circuit.
PIN CONFIGURATION (TOP VIEW)
VOUT 1 GND CLM 2 3
10 Vcc 9 8 7 EA IN EA OUT CT
FEATURES
CURRENT 4 SENSE CF 5
700kHz applicable to MOS-FET Output current Io(peak) = ±1A OUTLINE 10P2N-A Totem pole output VOUT 1 14 CURRENT SENSE terminal separate form CLM terminal makes SMPS strong in noise. 13 EMIT 2 High speed pulse-by-pulse current limiting GND 3 12 Timer type latch protection circuit with OVP(external reset is possible) Soft start operation is possible (with dead time control) 11 CLM 4 Built-in OPAmp for feedback control (photo coupler can be driven) CURRENT 5 10 Small start-up current 180µA SENSE Start-up voltage 12.5V, Stop voltage 8.3V CF 6 9
6 SOFT
COLLECT
Vcc EA IN EA OUT CT SOFT
APPLICATION
Switching
Regulator DC-DC converter
N.C
7
OUTLINE 14P4
8 N.C
Vcc
CLM
UVLO
CLM COMP
CT (OVP)
TIMER LATCH
0.2V
S CLM LATCH R
:note COLLECT
CS COMP
VOUT
R PWM LATCH S :note
EA IN
EMIT
2.5V OSC.
GND
EA OUT
SOFT
DUTY SET-UP
CURRENT CF SENSE
note: GND terminal is c...