AT1380
Preliminary Product Information
Switching Regulator Power Controller
Electrical Characteristics
(VCC=+2V, Ta=+250C)
Parameter
Symbol
VR
Condition
Values
Min. Typ. Max.
Unit
Under voltage
lockout to prevent
malfunction at low
input voltage
Reset voltage
--
--
0.9
V
--
Threshold voltage
Charging current
VTH
1.1 1.3 1.5
V
(UVLO)
ICS
Vts
VSCP=0V
-1.5 -1.0 -0.7
0.7 0.8 0.9
μA
V
Soft start
Voltage at soft start
--
--
completion
Short circuit
Charging current
ICSCP VSCP=0V
VtSCP
-1.5 -1.0 -0.7
0.7 0.8 0.9
μA
V
detection and
Threshold voltage
protection (S.C.P.)
Oscillation frequency
fOSC
fΔV
400 500 600 kHz
RT=3.0kΩ, CT=270pF
VCC=2V to 12V
Sawtooth waveform
oscillator (OSC)
Frequency input
--
2
10
%
Stability
Frequency variation
with temperature
Input threshold
Voltage
Ta =00C to 850C
VFB = 450mV
--
5
--
%
fΔT
VT
480 500 520 mV
VT input stability
VCC=2V to 12V
Ta = 00C to 850C
--
--
5
1
20 mV
--
VTΔV
VTΔT
VT variation with
%
Temperature
Input bias current
IB
VIN = 0V
-1.0 -0.2 1.0
70 100 145 V/V
μA
Error amplifier
Voltage gain
AV
--
AV = 0 dB
--
Frequency bandwidth
Maximum output
voltage range
BW
--
6
-- MHz
+
VOMax
VOMax
0.78 0.87 --
-- 0.05 0.2
V
V
μA
μA
%
_
+
Output source current
Output sink current
Maximum duty cycle
IOMax
VFB = 450mV
--
24
75
-40 -24
40
--
_
IOMax
--
85
Idle period
TDUTY
RT=3.0kΩ, CT=270pF
VFB = 0.8V
adjustment section
VOH1
VOH2
1.0 1.2
0.8 1.0
--
--
V
V
RB= 390Ω, IO= -15 mA
RB= 750Ω, VCC = 1.8V
IO= -10 mA
Output voltage
Output section
VOL1
VOL2
--
--
0.1 0.2
0.1 0.2
V
V
RB= 390Ω, IO= -15 mA
RB= 750Ω, VCC = 1.8V
IO= -10 mA
+
Output source current
Output sink current
Pull down resistance
IO
--
30
20
-30 -20 mA
60
30
RB= 390Ω, VO = 0.9V
-
IO
--
40
mA
ｋΩ
RB= 390Ω, VO = 0.3V
RO
--
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
4
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
