WT2595M Datasheet, PDF (1/9 Pages) Weitron Technology – 2A Step-down Voltage Regulator

WEITRON
WT2595M
2A Step-down Voltage Regulator Power Converter 150kHz
P b Lead(Pb)-Free
General Description:
The WT2595M is a monolithic integrated circuit that provide all the active functions for a step-down
switching regulator, capable of driving a 2A load without additional transistor component. Requiring
a minimum number of external component, the board space can be saved easily. The external
shutdown function can be controlled by TTL logic level and then come into standby mode. The
internal compensation makes feedback control have good line and load regulation without external
design. Regarding protected function, thermal shutdown is to prevent over temperature operating
from damage, and current limit is against over current operating of the output switch. The WT2595M
operates at a switching frequency of 150Khz thus allowing smaller sized filter components than what
would be needed with lower frequency switching regulators. Other features include a guaranteed
+4% tolerance on output voltage under specified input voltage and output load conditions, and +15%
on the oscillator frequency. The output version included fixed 3.3V, 5V, 12V, and an adjustable
type. The packages are available in a standard 8-lead SOP8.
Features:
* 3.3V, 5V, 12V and adjustable output versions
* Adjustable version output voltage range, 1.23V to 37V +4% max over line and load condiction
* SOP-8 packages
* Voltage mode non-synchronous PWM control
* Thermal-shutdown and current-limit protection
* ON/OFF shutdown control input
* Input voltage range up to 40V
* Output load current: 2A
* 150 kHz fixed frequency internal oscillator
* Low power standby mode
* Built-in switching transistor on chip
Applications:
* Simple High-efficiency step-down(buck) regulator
* Efficient preregulator for linear regulators
* On-card switching regulators
* Positive to negative converter
* Battery Charger
WEITRON
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hpp://www.weitron.com.tw
28-Sep-06