Sanyo EP91G Brochure page 11

Power Supply ICs for Single Lens Reflex Digital Cameras Power Supply ICs for Single Lens Reflex Digital Cameras
LV5604T LV5604T
■ Applications
8-channel switching regulator control IC
■ Functions/Features
● Low voltage (3V minimum) operation
● Reference voltage precision: ± 1%
● Independent standby function for each of the 8 channels
● Is capable of driving MOS transistors
● Synchronous rectifi cation: channels 1 and 2
● Supports inverting step-up operation
Type Input voltage Output voltage
Multiple power Programmable
3V to 15V 8ch (Step up 3, down 5)
supply externally
STBY8
STBY7
STBY6
STBY5
STBY4
STBY3
STBY2
STBY1
19
unit: mm
9.0
7.0
48 33
49 32
64 17
1 16
0.125
0.4 0.16
(0.5)
SANYO: TQFP64J(7X7)
Channels Power stages Package
External TQFP64J(7×7)
Block Diagram
Channel 8 step-up/step-down is
selected by SEL_CH8
Power Supply Switching ICs Power Supply Switching ICs
LV5621LP LV5621LP
■ Applications
For digital still cameras
Switching IC between main and backup power supplies
■ Functions/Features
● Low power dissipation
● Switching among 3 power sources
(main battery, button battery, external power supply)
● LDO×3 (2.6V, 3.0V, 3.2V)
● Three voltage detection circuits (2.6V, 2.8V, 2.2V)
Input voltage
V CC 1: 2.7V to 4.8V V CC 2: 3V V CC 3: 3.5V to 5.2V
Lithium-ion/AC adapter
LDO1
V IN
REG 2.6V
(2.7 to 4.8V)
30mA
LDO3
VBOOST REG 3.2V
60mA
10kΩ
SEL
200kΩ
Voltage detection
Set to low at 2.8V
Set to high again at 2.9V
Reset voltage
detection 2.2V
Hysteresis width
0.1V
LDO2
REG 3.0V
15mA
BACK_CNT
Input: LDO2 ON when H
GND
unit: mm
TOP VIEW SIDE VIEW BOTTOM VIEW
(0.125)
2.6
(C0.116)
2 1
LASER MARKED 0.5
INDEX
(0.55)
SIDE VIEW
0.25
SANYO: VCT16(2.6X2.6)
Package Applications
For DSCs and game
VCT16(2.6×2.6)
machines
Block Diagram
V OUT
VBATT M1
VBATT
Pch
Voltage detection
2.6V
Hysteresis width
40mV
SW_V OUT
Pch
SW_ON
Pch
Nch
PULL_UPV
PULL_UPON
22kΩ
BAT_OFF
22kΩ
Nch
RESET
Delay circuit
Nch
VCHG
1.1kΩ
DC_IN
600Ω
DC_IN
20