ELM604PA_17 Datasheet, PDF (1/7 Pages) ELM Technology Corporation – 1.4MHz, 800mA dual PWM step-down converter

ELM604PA 1.4MHz, 800mA dual PWM step-down converter
■General description
ELM604PA consists of dual high efficiency PWM step-down DC/DC converters operated with current
mode and constant frequency. For each converter the integration of a main switch and a synchronous rect-
ifier eliminates the use of an external Schottky diode. ELM604PA is ideal for the application of portable
electronic devices with a single cell Lithium-ion (Li+) battery. Each converter can supply 800mA of load current
from a 2.5V to 6V input voltage. The output voltage can be regulated as low as 0.6V. It can also run at 100%
duty cycle for low dropout applications.
■Features
• Current mode operation
• Thermal shutdown protection
• Short circuit protection
• Constant frequency operation : Typ.1.4MHz
• Output current
: 800mA(on each channel)
• Low output voltage
: 0.6V
• High efficiency
: Max.95%
• Shutdown current
: Typ.0.1µA
• Supply voltage
: 2.5V to 6.0V
• Full duty ratio
: 0 to 100% (in dropout)
• Package
: TDFN10-3x3
■Application
• PDAs
• MP3 players
• Portable instruments
• Cellular and smart phones
• Digital still and video cameras
• Microprocessors and DSP core supplies
■Maximum absolute ratings
Parameter
Symbol
Limit
Unit
VIN1/VIN2 power supply voltage
Vin
-0.3 to +6.5
V
Apply voltage to
SW1/SW2
Vsw
-0.3 to Vin+0.3
V
Apply voltage to FB1/FB2
Vfb
-0.3 to Vin1/Vin2
V
Apply voltage to EN1/EN2
Ven
-0.3 to Vin1/Vin2
V
Operating temperature range
Top
-40 to +85
°C
Storage temperature range
Tstg
-65 to +150
°C
Caution:Permanent damage to the device may occur when ratings above maximum absolute ones are used.
■Selection guide
ELM604PA-N
Symbol
a
Package
b
Product version
c
Taping direction
* ^{Taping direction is one way.}
P: TDFN10-3x3
A
N: Refer to PKG file
ELM604PA - N
↑↑ ↑
ab c
7-1
Rev.1.2