CP3800
Switching Regulator Power Controller
Electrical Characteristics
(VCC=+2V, Ta=+250C)
Parameter
Symbol
VR
Condition
Values
Min. Typ. Max.
Unit
Circuit to prevent
Reset voltage
--
--
0.9
V
V
malfunction at low
input voltage
(U.V.L.O.)
--
Threshold voltage
Charging current
VTH
1.1 1.3 1.5
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
ICPC
VtPC
fOSC
fdV
fdT
VT
VSCP=0V
-1.5 -1.0 -0.7
0.7 0.8 0.9
μA
V
detection (S.C.P.)
Threshold voltage
Oscillation frequency
400 500 600 kHz
RT=3.3kΩ, CT=270pF
VCC=2V to 12V
Sawtooth wave
oscillator (OSC)
Frequency input
--
2
10
%
Stability
Frequency variation
with temperature
Input threshold
Voltage
Ta =-300C to 850C
VFB = 450mV
--
5
--
%
480 500 520 mV
VT input stability
VT variation with
Temperature
VTdV VCC=2V to 12V
VTdT
--
--
5
1
20 mV
Ta = -300C to 850C
--
%
Input bias current
IB
VIN = 0V
-1.0 -0.2 1.0
μA
Error amplifier
Voltage gain
AV
--
AV = 0 dB
--
70 100 145 V/V
Frequency bandwidth
Maximum output
voltage range
BW
--
6
-- MHz
+
VOM
VOM
0.78 0.87 --
-- 0.05 0.2
V
V
_
+
Output source current
Output sink current
Maximum duty cycle
IOM
IOM
VFB = 450mV
--
24
75
-40 -24
40
--
μA
μA
%
_
--
85
Idle period
TDUTY
RT=3.3kΩ, CT=270pF
fOSC = 500KHz
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
-30 -20 mA
60
RB= 390Ω, VO = 0.9V
-
IO
--
40
mA
ｋΩ
RB= 390Ω, VO = 0.3V
RO
--
20
30
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Tel:886-3-3214525
Email: server@ceramate.com.tw
Http: www.ceramate.com.tw
Rev 1.0 Mar.31,2003
Page 4 of 19
Fax:886-3-3521052
CERAMATE [ CERAMATE TECHNICAL ]
