AA1700 Agamem Microelectronic, AA1700 Datasheet - Page 4

• Manufacturer Part Number: AA1700
• Description: Constant Current White LED Driver
• Manufacturer: Agamem Microelectronic

Circuit to prevent
malfunction at low
input voltage
(U.V.L.O.)
Soft start
Short circuit
detection (S.C.P.)
Sawtooth wave
oscillator (CLK)
Error amplifier
Idle period
adjustment
section
PRELIMINARY
■ELECTRICAL CHARACTERISTICS
©Copyright Agamem Microelectronics Inc.
Parameter
Reset voltage
Threshold voltage
Charging current
Voltage at soft start
completion
Charging current
Threshold voltage
Oscillation
frequency
Frequency input
stability
Frequency variation
with temperature
Input threshold
voltage
V
V
temperature
Input bias current
Voltage gain
Frequency
bandwidth
Maximum output
voltage range
Output source
current
Output sink current
Maximum duty cycle
T
T
input stability
variation with
Agamem Microelectronics Inc.
Symbol
V
V
t
V
V
I
V
I
BW
I
V
f
DUTY
V
V
I
OM –
CPC
f
f
V
A
OM+
CLK
OM –
I
CS
OM+
dV
dT
TdV
tPC
TdT
TH
B
tS
R
T
V
V
V
R
V
Ta = –30°C to +85°C
V
V
Ta = –30°C to +85°C
V
A
V
R
V
4
SP
SP
CC
ER
CC
IN
V
ER
ER
T
T
= 3.0 kΩ , C
= 0 dB
= 3.0 kΩ , C
= 0 V
= 0 V
= 0 V
= 2 V to 15 V
= 450 mV
= 2 V to 15 V
= 0.45 V
= 0.8 V
Condition
—
—
—
—
—
T
T
AA1700
Constant Current White LED driver
= 270 pF
= 270 pF
www.agamem.com.tw
(V
–1.5
–1.5
–1.0
0.78
Min
400
480
1.1
0.7
0.7
CC
70
24
65
—
—
—
—
—
—
—
—
= +2 V, Ta = +25
Value
–1.0
–1.0
–0.2
0.87
0.05
Typ
500
500
100
–40
1.3
0.8
0.8
40
75
—
2
5
5
1
6
Max
–0.7
–0.7
600
520
145
–24
0.9
1.5
0.9
0.9
1.0
0.2
10
20
85
—
—
—
—
—
2007/1/22
。
C)
MHz
Unit
µ A
µ A
kHz
µ A
µ A
µ A
V/V
mV
mV
%
%
%
%
V
V
V
V
V
V