MAX1698 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1698 Datasheet PDF : 8 Pages
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High-Efficiency Step-Up
Current Regulator for LEDs
ELECTRICAL CHARACTERISTICS
(VCC = +3.3V, TA = -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Quiescent Supply Current
Undervoltage Lockout
FB Regulation Voltage
CS Trip Current
Minimum Off Time
Maximum On Time
ADJ Start Threshold
FB Input Bias Current
ADJ Input Bias Current
Shutdown Supply Current
REF Output Voltage
REF Load Regulation
REF Short-Circuit Current
SYMBOL
VCC
ICC
VFB
tOFF(MIN)
tON(MAX)
CONDITIONS
VFB = 0.3V
Rising edge
ADJ = REF
VADJ = 100mV
FB = GND
MAX1698A
MAX1698
FB = GND, ADJ = REF
FB = GND, ADJ = REF, CS = GND
IFB
IADJ
VREF
∆VREF
VFB = 300mV
ADJ = REF
SHDN = GND
IREF = 0
IREF = 0 to 150µA
REF = GND
REF Power-Supply Rejection
Ratio
PSRR VCC = 2.7V to 5.5V
EXT On-Resistance
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Bias Current
VIH
VIL
I SHDN
VCC = 5V
VCC = 2.7V to 5.5V
VCC = 2.7V to 5.5V
VCC = 2.7V to 5.5V
Note 1: Specifications to -40°C are guaranteed by design, not production tested.
MIN
2.7
2.20
280
13
2.0
0.8
0.6
9
25
-20
-50
1.17
2
-1
MAX
5.5
500
2.65
320
35
3.0
3.0
1.4
21
75
20
50
1
1.33
-30
1
UNITS
V
µA
V
mV
A
µs
µs
mV
nA
nA
µA
V
mV
mA
+2 mV/V
8
Ω
V
0.8
V
1
µA
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