ACE150X Datasheet, PDF (1/13 Pages) ACE Technology Co., LTD. – 150KHz,2A, PWM Step-Down DC/DC Converter

Technology
ACE150X
150KHz,2A, PWM Step-Down DC/DC Converter
Description
The ACE150x series are monolithic IC designed for a step-down DC/DC converter, and own the ability of
driving 2A load without additional transistor. It saves board space.
The Internal compensation makes feedback control having 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. If current limit
function occurs and V_FB is down below 0.5V, the switching frequency will be reduced.
The ACE150x series operate at a switching frequency of 150KHz. 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
chips are available in a standard 8-lead SOP-8 package..
Features
• Guaranteed 2A output current
• 3.3V, 5V, 12V and adjustable output versions
• Thermal shutdown and current limit protection
• Internal oscillator of 150kHz fixed frequency.
• Built-in TTL On/Off control
Application
• One Channel switching regulators
• LCD Monitors
• High-efficiency step-down regulator
Absolute Maximum Ratings
Parameter
Symbol
Max
Unit
Input supply voltage
ON/OFF Pin Input Voltage
Feedback Pin Voltage
Output Voltage to Ground
Power Dissipation
Thermal resistance junction to ambient
SOP-8
V_CC
V_SD
V_FB
V_OUT
P_D
θJA
24
V
-0.3 to +18 V
-0.3 to +18 V
-1
V
Internally Limited W
70
O_C/W
Operating junction temperature
Storage temperature range
Operating temperature
TJ
150
O_C
TSTG
- 60 to 150 ^OC
TOPR
-40 to +125
O_C
Note : Exceeding these rating could cause damage to the device. All voltages are with respect to Ground. Currents are positive
into, negative out of the specified terminal.
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