Electrical characteristics – Rainbow Electronics MAX1698 User Manual
Page 3
MAX1698
High-Efficiency Step-Up
Current Regulator for LEDs
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.3V, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
CONDITIONS
V
V
CC
Supply Voltage
2.7
5.5
UNITS
MIN
MAX
SYMBOL
PARAMETER
CS Trip Current
FB = GND
0.8
3.0
A
Minimum Off Time
t
OFF(MIN)
FB = GND, ADJ = REF
0.6
1.4
µs
Maximum On Time
t
ON(MAX)
FB = GND, ADJ = REF, CS = GND
9
21
µs
ADJ Start Threshold
25
75
mV
FB Input Bias Current
I
FB
V
FB
= 300mV
-20
20
nA
ADJ Input Bias Current
I
ADJ
ADJ = REF
-50
50
nA
Shutdown Supply Current
SHDN = GND
1
µA
REF Output Voltage
V
REF
I
REF
= 0
1.17
1.33
V
REF Load Regulation
∆V
REF
I
REF
= 0 to 150µA
-30
mV
REF Short-Circuit Current
REF = GND
1
mA
REF Power-Supply Rejection
Ratio
PSRR
V
CC
= 2.7V to 5.5V
+2
mV/V
EXT On-Resistance
V
CC
= 5V
8
Ω
SHDN Input High Voltage
V
IH
V
CC
= 2.7V to 5.5V
2
V
SHDN Input Low Voltage
V
IL
V
CC
= 2.7V to 5.5V
0.8
V
SHDN Input Bias Current
I
SHDN
V
CC
= 2.7V to 5.5V
-1
1
µA
Note 1: Specifications to -40°C are guaranteed by design, not production tested.
Rising edge
V
Undervoltage Lockout
2.20
2.65
V
ADJ
= 100mV
ADJ = REF
mV
13
35
V
FB
FB Regulation Voltage
280
320
V
FB
= 0.3V
µA
I
CC
Quiescent Supply Current
500