ELM604PA 1.4MHz, 800mA dual PWM step-down converter
■Pin configuration
TDFN10-3x3(TOP VIEW)
TDFN10-3x3(BOTTOM VIEW)
1
2
3
4
5
10
9
10
9
1
2
3
4
5
8
8
7
7
6
6
Pin No.
Pin name
EN1
Pin description
Channel 1 enable control input
Channel 1 voltage feedback
Channel 2 supply input
1
2
3
4
5
6
7
8
9
FB1
VIN2
GND2
SW2
EN2
FB2
VIN1
GND1
SW1
Channel 2 ground pin
Channel 2 power switch output
Channel 2 enable control input
Channel 2 voltage feedback
Channel 1 supply input
Channel 1 ground pin
Channel 1 power switch output
10
■Standard circuit
Vin1/Vin2
2.5V to6V
Cin1=
22µF
Cin2=
22µF
8
3
R5
R6
VIN1 VIN2
1
6
5
EN1
EN2
SW2
ON/OFF
ON/OFF
L2=
4.7µH
L1=
4.7µH
ELM604PA
10
Vout1
1.8V
Vout2
1.2V
SW1
C1
C2
2
7
Cout1
10µF
Cout2
10µF
FB1
FB2
R1
1MΩ
R3
300kΩ
GND1 GND2
R2
499kΩ
R4
300kΩ
9
4
Passive components not specified values in the above figure are optional.
*
Rev.1.2
7 - 2
ELM-TECH [ ELM Technology Corporation ]
