AA18380
Agamem Microelectronics Inc.
PRELIMINARY
Switching Regulator Controller
(Continued)
Value
Parameter
Symbol
Condition
Unit
Min
Typ
Max
RB = 390 Ω , IO = –15 mA
VOH1
VOH2
VOL1
VOL2
1.0
1.2
—
V
V
V
V
RB = 750 Ω , VCC = 1.8 V
IO = –10 mA
0.8
—
1.0
0.1
0.1
—
Output voltage
RB = 390 Ω , IO = 15 mA
0.2
0.2
Output section
RB = 750 Ω , VCC = 1.8 V
IO = 10 mA
—
Output source
current
IO+
RB = 390 Ω , VO = 0.9 V
—
–30
–20 mA
Output sink current
Pull down resistance
Pin voltage
IO –
RO
RB = 390 Ω , VO = 0.3 V
30
20
60
30
0.3
—
—
40
0.4
0
mA
kΩ
V
—
VBR
IOFF
ION
RB = 390 Ω
0.2
–20
—
Output current
setting section/
Control section
Input off condition
Input on condition
Pin current range
Stand-by current
µ A
—
–45 µ A
—
IBR
–1.8
—
—
–0.1 mA
ICCS
BR/CTL pin open or VCC
—
1
µ A
Entire device
Average supply
current
ICC
RB = 390 Ω
—
5.5
9.3
mA
■ TIMING DIAGRAM
FB Pin voltage
Reference input for short
circuit detectioin compartor
Idle Period setting voltage
Sawtooth wave output
Soft start setting voltage
Out put waveform
Stable State
SCP pin waveform
tPE
Output short circuit
Soft start
tS
Output
Short
circuit
ON--
Power supply control SW
OFF
Short circuit
detection
5
©Copyright Agamem Microelectronics Inc.
www.agamem.com.tw
2007/1/15
AGAMEM [ AGAMEM MICROELECTRONIC INC. ]
