LV5841M Datasheet, PDF (1/5 Pages) Sanyo Semicon Device – Bi-CMOS IC Step-down Switching Regulator

Ordering number : ENA1643
LV5841M
Bi-CMOS IC
Step-down Switching Regulator
Overview
LV5841M is a chopper type 1ch step-down regulator incorporating the drive transistor.
For the HI side switch, the 0.06Ω resistance is incorporated, enabling driving of the output up to 4.5 A with high
efficiency.
Being of a current mode control type, this product ensures satisfactory load current response and simple phase
compensation. The fold-back function is provided as the protection in case of output over-current. This function reduces
the frequency in case of over-current and thus reduce the inductor current. The overheat protection function is also
provided. For the package, MFP8 without exposed-PAD has been employed..
Functions
• 4.5A 1ch step-down switching regulator
• Input Voltage Range (5-18V)
• High efficiency: Max efficiency over 90%
• Compact package: MFP8 (225mil)
(No backside heat sink)
• Current Mode Operation
• Low impedance Switch: High-Side Switch: 60mΩ
• Soft start time 3.5ms
• Over-current protection
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Input voltage
SW pin voltage
EN pin voltage
FB,COMP pin
Symbol
VIN-abs
VSW-abs
VEN-abs
Conditions
Allowable power dissipation
Pd max
With specified board *
Junction temperature
Tj max
Operating temperature
Topr
Storage temperature
Tstg
* Specified board: 31.0mm × 34.0mm ×1.7mm, glass epoxy.
Ratings
Unit
-0.3 to 20
V
-0.3 to VIN+0.3
V
VIN-abs
V
-0.3 to 7
V
1.0
W
150
°C
-30 to 85
°C
-40 to 150
°C
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11310 SY 20091126-S00002 No.A1643-1/5