LV5818M Datasheet, PDF (1/6 Pages) Sanyo Semicon Device – Step-down Switching Regulator

Ordering number : ENA1900
LV5818M
Bi-CMOS IC
Step-down Switching Regulator
Overview
LV5818M is a 1ch step-down switching regulator. 0.3Ω FET is incorporated on the upper side to achieve high-efficiency
operation for large output current. Low-heat resistance and compact-package MFP12 employed. Current mode control
type, with superior load current response and easy phase compensation EN pin, allowing the standby mode with the current
drain of 70μA 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
• 2A 1ch step-down switching regulator
• Wide input dynamic range ( to 28V)
• High efficiency (90% IOUT = 1A, VIN = 12V, VO = 5V)
• Standby mode
• Over-current protection
• External synchronous driving
• Thermal shutdown
• Reference voltage: 0.8V
• The frequency is changeable in external resistance.
• Soft start
• Compact package: MFP12
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum input VIN voltage
BOOT pin maximum voltage
SW pin maximum voltage
BOOT pin-SW pin maximum voltage
FB, EN, COMP, SS, SYNC, RT pin
maximum voltage
Allowable power dissipation
VIN max
VBT max
VSW max
VBS-SW max
Vfs max
Pd max
Mount on a specified board *
32
V
37
V
VIN max
V
7
V
7
V
1.65
W
Junction temperature
Tj max
150
°C
Operating temperature
Topr
-20 to 80
°C
Storage temperature
Tstg
-40 to 150
°C
* Specified board: 46.4mm × 31.8mm ×1.7mm, glass epoxy both side.
Note: Plan the maximum voltage while including coil and surge voltages, so that the maximum voltage is not exceeded even for an instant.
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Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
D0810 SY 20101130-S00002 No.A1900-1/6