2A, 20V, 550kHz, synchronous step-down DC/DC converter
ELM613DA
■General description
ELM613DA is 550KHz fixed frequency PWM synchronous step-down regulator. ELM613DA is operated from
4.75V to 20V, the generated output is adjustable from 0.923V to 18V, and the output current can be up to 2A.
The integrated two MOSFET switches is with turn on resistance of 0.085Ω. Current mode control provides fast
transient response and cycle-by-cycle over current protection. The shutdown current is 1μA typical. Adjustable
soft start prevents inrush current at turn on. ELM613DA is with thermal shutdown.
■Features
■Application
• Programmable soft start
• Short circuit protection
• Thermal shutdown protection
• Input voltage
• Distributed power system
• Network system
• FPGA, DSP, ASIC power supply
• Notebook computer
: 4.75V to 20V
: 0.923V to 18V
: 2A
• Output voltage
• Green electronics and appliance
• Output current
• High efficiency
: Max.93%
: 85mΩ
• Power MOSFET switches
• Shutdown current
• Fixed frequency
• Package
: Typ.1µA
: Typ.550kHz
: SOP-8
■Maximum absolute ratings
Parameter
VIN power supply voltage
Apply voltage to SW
Apply voltage to BS
Symbol
Vin
Vsw
Vbs
Limit
-0.3 to +21
-0.3 to Vin+0.3
Vsw-0.3 to Vsw+6
-0.3 to +6
Unit
V
V
V
V
Apply voltage to FB
Vfb
Apply voltage to COMP
Apply voltage to EN
Vcomp
Ven
-0.3 to +6
-0.3 to +6
V
V
Apply voltage to SS
Vss
-0.3 to +6
V
Power dissipation
Operating temperature range
Storage temperature range
Pd
Top
Tstg
630
-40 to +85
-65 to +150
mW
°C
°C
Caution:Permanent damage to the device may occur when ratings above maximum absolute ones are used.
■Selection guide
ELM613DA-N
Symbol
ELM613DA - 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.
*
Rev.1.3
11 - 1