LV5069JA Datasheet, PDF (1/20 Pages) ON Semiconductor – Step-down Switching Regulator Controller

Ordering number : ENA2177
LV5069JA
Bi-CMOS IC
Low power consumption and high efficiency
Step-down Switching Regulator Controller
http://onsemi.com
Overview
LV5069JA is Step-down switching regulator controller. The recommended operating range is 4.5V-23V. The operating
current is about 68μA, and low power consumption is achieved.
Features and Functions
• Typical value of light load mode current is 68μA
• 4.5V to 23V Operating input voltage range
• The oscillatory frequency can be set by the external pin. The oscillatory frequency is 300kHz - 1MHz.
• Output voltage adjustable to 1.26V
• Built-in OCP circuit with P-by-P method
• When P-by-P is generated continuously, It shifts to the HICCUP operation
• If connect C-HICCUP to GND pin, Then latch-off when over current
• External capacitor Soft-Start
• Under voltage lock-out, Thermal shutdown and power good indication
Applications
• DVD/Blu-rayTM Drivers and HDD
• LCD Monitors and TVs
• Point of Load DC/DC Converters
• Office Supplies
Typical Application
VIN
EN
VIN
C3 R2
C1
PG
1μF
10μF
VFB
FB
PDR
LV5069JA
×2
R1
30mΩ
REF
ILIM
COMP
RSNS
SS
HDRV
Q1
R6
47kΩ
C-HICCUP
RT
GND
R7
C7 C7 C7 C8 470kΩ
1μF 4.7nF 2.2nF 2.2nF
C1: GRM31CB31E106K [murata]
C2: C2012JB0J106M [TDK]
Q1: CPH6350
D1: SB3003CH
L1: FDVE1040-100M [TOKO]
L1 10μH
VOUT
R4
D1
VFB
C2
R5
10μF
×3
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
March, 2013
32013NKPC 20130225-S00009 No.A2177-1/20