A
B
D
C
A
B
C
D
6
5
4
3
2
1
DATE:
LTR
ECO NO:
APPROVED:
REVISION RECORD
SCALE:
DRAWING NO:
TITLE:
COMPANY:
RELEASED:
DATED:
DATED:
QUALITY CONTROL:
CHECKED:
DATED:
DATED:
DRAWN:
CODE:
SIZE:
REV:
C
SHEET: OF
2
6
TLV62085 can supply up to 3A output load current from an input voltage not exceeding 6V.
DC_POWER 2.5V to 6V
VBAT = 0.8 * ( 1 + R100/R101 ) = 3.79V
SY7072A can supply up to 2A output load current from an input voltage not exceeding 5.5V.
DC_POWER should be less than 5.5V
VBAT = 1.2* ( 1 + R807/R808 ) = 3.78V
For one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline Ni-Cd or Ni-MH battery powered applications.
For four cell 1.5V alkaline batteries
Choose one between the two schemes
ON/OFF
Step-up Boost DC/DC (5uA Typical Quiescent Current)
Step-down DC/DC (17uA Typical Quiescent Current)
C101
100nF
C102
33pF
C100
22uF
L100
0.47uH
C103
22uF
C105
100nF
C106
33pF
R102
560K,1%
R103
150K,1%
C107
NC
B100
BEAD0805 3A
C104
22uF
C109
100nF
C110
33pF
C108
22uF
C111
22uF
C113
100nF
C114
33pF
R106
215K,1%
R107
100K,1%
C115
NC
B101
BEAD0805 2A
C112
22uF
1
EN
2
PG
3
FB
4
VOS
5
GND
6
SW
7
VIN
U100
TLV62085
1
LX
2
GND
3
FB
4
EN
5
OUT
6
IN
U101
SY7072A
R100
0R
R101
1M
L101
1.5uH
R104
NC
R105
1M
DC_POWER
DC_POWER
VBAT
DC_POWER
VBAT
POWER_GOOD_MCU
POWER_EN_MCU