2A synchronous step-down DC/DC converter
ELM605DA
■General description
ELM605DA is low-input voltage and high-output current synchronous-buck PWM converter and integrates
with all required active components. Its' operating input voltage ranges from 2.5V to 6V and output voltage
ranges from Vin down to 0.8V. ELM605DA operates at a fixed switching frequency of 1.0MHz. In addition, it
provides internal soft-start to reduce inrush-current, current-limit and thermal shutdown, preventing IC from
being damaged and improving design reliability. Open-drain power good monitors the output voltage.
■Features
■Application
• Current mode operation
• ASIC/DSP/μP/FPGA core and I/O voltages
• Networking and telecommunications
• TV
• Power good function monitoring output voltage
• Internal soft start
• Thermal shutdown
• Set top boxes
• Current-limit and short-circuit protection
• Cellular base stations
• Input voltage range
• Output current
: 2.5V to 6.0V
: 2A
• Low quiescent current (active mode) : 200μA
• Output voltage range (adj.)
• Shutdown current
• High efficiency
: 0.8V to Vin
: 7μA
: 95%
• Constant frequency operation
• Package
: 1.0MHz
: SOP-8
■Maximum absolute ratings
Parameter
VIN power supply voltage
Apply voltage to SW
Apply voltage to EN
Apply voltage to FB
Power dissipation
Operating temperature range
Storage temperature range
Symbol
Limit
-0.3 to +6.5
-0.3 to Vin+0.3
-0.3 to Vin
-0.3 to Vin
300
Unit
V
V
V
V
mW
°C
°C
Vin
Vsw
Ven
Vfb
Pd
Top
Tstg
-40 to +150
-65 to +150
Caution:Permanent damage to the device may occur when ratings above maximum absolute ones are used.
■Selection guide
ELM605DA-S
Symbol
ELM605DA - S
a
b
c
Package
Product version
Taping direction
D: SOP-8
A
S: Refer to PKG file
↑ ↑ ↑
a b c
Taping direction is one way.
*
Rev.1.2
13 - 1
ELM-TECH [ ELM Technology Corporation ]
