AT1368
Preliminary Product Information
1-Channel Synchronous Buck PWM Controller
with Power Good Reset
Electrical Characteristics
(VCC = 5V,Ta =+25℃ , unless otherwise noted. )
Parameter
Input Supply Range
Quiescent Current
Current in standby mode
Entire device
Reference Voltage
Reference Voltage
line-regulation
Rference Variation
with Temperature
Input Offset Voltage
Source Current
Sink Current
Source current Variation
with temperature
Sink current Variation
with temperature
Unity Gain Bandwidth
Common Mode Input
Voltage Range
DC Open Loop Gain
Frequency
Sawtooth wave
oscillator (OSC)
High Level Voltage
Low Level Voltage
Variation with Power
Supply
Variation with
temperature
Charge Current of
SS
Invalid threshold
voltage of SS
Charge Current of
SS
Symbol
V
CC
I
CC
I
ST
V
REF
V
REF-Line
Condition
2.5
Duty=50%,
fOSC=600KHz
PDRV/NDRV No Load
CTL=0V
Ta =-20℃ to +85℃
VCC=2.5V to 7.0V
Ta =-20℃ to +85℃
Values
Min. Typ. Max.
--
1.0
7.0
1.5
10
1.20 1.22 1.24
1
0.5
-1.0
160
-1.5
120
5
1.5
10
-2.0
80
20
20
10.0
0.2
1.5
110
300
600
1.0
0.5
Unit
V
mA
µA
V
mV
%
mV
mA
μA
%
%
MHz
V
dB
350 KHz
700 KHz
V
V
2
7
%
%
µA
V
µA
V
IO
I
OH
I
OL
V
COMP
= V
REF
-0.5V
V
COMP
= 0.5V
Ta =-20℃ to +85℃
Ta =-20℃ to +85℃
Error amplifier
f
T
V
COM
A
V
fosc
fosc
AT1368A
AT1368B
250
500
Vcc=2.5V to 7V
Ta =-20℃ to +85℃
I
CSS
-1.0
1.0
I
CSCP
Soft-Start
-1.5 -1.25 -1.0
Short-Circuit
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW:
http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email:
service@aimtron.com.tw
4
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
