ELM612DA 3A 36V PWM step down DC/DC converter
■Selection guide
ELM612DA-N
Symbol
ELM612DA - N
↑ ↑ ↑
a
b
c
Package
Product version
Taping direction
D: SOP-8
A
N: Refer to PKG file
a b c
Taping direction is one way.
*
■Pin configuration
SOP-8(TOP VIEW)
Pin No. Pin name
Pin description
Feedback(0.82V operation)
Enable / Disable
1
FB
8
7
6
5
2
EN
H: Normal operation mode.(Step-down operation)
L: Shutdown mode.(All circuits deactivated)
Add an external capacitor to VIN.
The voltage is set to Vin -7V
IC power supply
Switch. Connect external inductor/diode to here.
Minimize trace area at this pin to reduce EMI.
GND
3
VC
VIN
SW
4
1
2
3
4
5, 6
7, 8
GND
■Standard circuit
VIN
FB
L=47µH
ELM612DA
Vout
EN
SW
Cc=
0.1µF/16V
Cout=
330µF/16V
R1
R2
VC GND
24V
+
-
Cin=330µF/50V
D=5A/40V
Vout=Vfb(1+R1/R2)
Rev.1.1
8 - 2
ELM [ ELM ELECTRONICS ]
