LV5858M Datasheet, PDF (1/9 Pages) Sanyo Semicon Device – Step-down Switching Regulator

Ordering number : ENA1977
LV5858M
Bi-CMOS IC
Step-down Switching Regulator
Overview
LV5858M is a 3A and 1ch step-down switching regulator. 0.1Ω FET is incorporated on the upper side to achieve
high-efficiency operation for large output current. Current mode control type, with superior load current response and easy
phase compensation ON/OFF pin, allowing the standby mode with the current drain of 60μA or less Pulse-by-pulse
over-current protection and overheat protection available for protection of load devices Soft start pin to be provided with a
capacitance for soft start.
Functions
• Wide input dynamic range ( 8 to 42V)
• Thermal shutdown
• High efficiency (VIN = 24V, VO = 5V, IOUT = 3A, 88%) • Reference voltage: 0.708V
• Current mode control type
• Fixed frequency: 385kHz
• Standby mode: 60μA
• Load-independent soft start circuit
• Built-in pulse-by-pulse OCP circuit. It is detected by using ON resistance of an external MOS.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Supply voltage
Allowable pin
voltage
VIN, SW
CBOOT
Between CBOOT and SW
EN
VDD
SS, FB, COMP, RT
Allowable power dissipation
Operating temperature
Storage temperature
Junction temperature
Symbol
VIN max
Pd max
Topr
Tstg
Tj max
Conditions
Ta≤85°C Mounted on a specified board *
Ratings
Unit
45
V
45
V
52
V
6.0
V
VIN max
V
6.0
V
VDD
V
0.95
W
-40 to 85
°C
-55 to 150
°C
150
°C
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91411 SY 20110825-S00007 No.A1977-1/9