LV5980MC_13 Datasheet, PDF (1/16 Pages) ON Semiconductor – Low power consumption

Ordering number : ENA2104
LV5980MC
Bi-CMOS IC
Low power consumption
and high efficiency
Step-down Switching
Regulator
http://onsemi.com
Overview
LV5980MC is 1ch DCDC converter with built-in power Pch MOSFET. The recommended operating range is 4.5V to
23V. The maximum current is 3A. The operating current is about 63μA, and low power consumption is achieved.
Features and Functions
• 1ch SBD rectification DCDC converter IC with built-in power Pch MOSFET
• Typical value of light load mode current is 63μA
• 4.5V to 23V Operating input voltage range
• 100mΩ High-side switch
• Output voltage adjustable to 1.235V
• The oscillatory frequency is 370kHz
• built-in OCP circuit with P-by-P method
• When P-by-P is generated continuously, it shifts to the HICCUP operation
• External capacitor Soft-start
• Under voltage lock-out, thermal shutdown
Applications
• Set top boxes
• Point of load DC/DC converters
• White Goods
• DVD/Blu-ray™ drivers and HDD
• Office Equipment
• LCD monitors and TVs
• POS System
Application Circuit Example
VIN
C1
C3
1μF
10μF
×2
R1
47kΩ
C7 C6 C5
1μF 4.7nF 2.2nF
PDR
VIN
L1 10μH
VOUT
SW
D1
R3 C2 ^5V
REF
LV5980MC
FB
COMP
10μF
×3
R2
SS/HICCUP
GND
C1: GRM31CB31E106K [murata]
C2: C2102JB0J106M [TDK]
L1: FDVE1040-100M [TOKO]
D1: SB3003CH [SANYO]
100
VOUT = 5V
90
80
70
Efficiency
VIN=8V
VIN=15V
VIN=12V
60
50
40
30
20
10
0
0.1 ^{2 3 5 7} 1 ^{2 3 5 710 2 3 5 7100 2 3 5 71000 2 3 5 710000}
Load current -- mA
Semiconductor Components Industries, LLC, 2013
August, 2013
N2112NKPC 20120801-S00003 No.A2104-1/16