MAX1698AEUB Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1698AEUB Datasheet PDF : 8 Pages
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High-Efficiency Step-Up
Current Regulator for LEDs
ABSOLUTE MAXIMUM RATINGS
VCC, SHDN to GND ..................................................-0.3V to +6V
EXT, FB, CS, ADJ, REF to GND..................-0.3V to (VCC + 0.3V)
GND to PGND.....................................................................±0.3V
Continuous Power Dissipation (TA = +70°C)
10-Pin µMAX (derate 5.6mW/°C above +70°C) ............444mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature Range (soldering, 10s)......................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +3.3V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
Supply Voltage
VCC
2.7
Quiescent Supply Current
ICC
VFB = 0.3V
Undervoltage Lockout
Rising edge
2.25
Undervoltage Hysteresis
ADJ = REF
285
FB Regulation Voltage
VFB
VADJ = 100mV
18
CS Trip Current
MAX1698A
2.0
FB = GND
MAX1698
0.8
CS Input Current
ICS
Minimum Off Time
tOFF(MIN) FB = GND, ADJ = REF
0.8
Maximum On Time
tON(MAX) FB = GND, ADJ = REF, CS = GND
10
ADJ Start Threshold
30
ADJ Input Range
FB Input Bias Current
VADJ
IFB
VFB = 300mV
0.03
-15
ADJ Input Bias Current
IADJ ADJ = REF
-50
Shutdown Supply Current
SHDN = GND
REF Output Voltage
REF Load Regulation
VREF
∆VREF
IREF = 0
IREF = 0 to 150µA
1.20
REF Short-Circuit Current
REF = GND
TYP
260
2.4
80
300
24
2.4
1.5
1.0
15
50
0.01
1.25
-2
0.45
MAX
5.5
500
2.55
315
30
2.8
2.5
0.8
1.2
20
70
REF
15
50
1
1.30
-25
1
UNITS
V
µA
V
mV
mV
A
ARMS
µs
µs
mV
V
nA
nA
µA
V
mV
mA
REF Power-Supply Rejection
Ratio
PSRR VCC = 2.7V to 5.5V
+0.3
+2 mV/V
EXT Driver Sink/Source Current
EXT Driver On-Resistance
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Bias Current
VIH
VIL
I SHDN
VCC = 5V, EXT = 2V
VCC = 5V
VCC = 2.7V to 5.5V
VCC = 2.7V to 5.5V
VCC = 2.7V to 5.5V
0.2
A
8
Ω
2
V
0.8
V
-1
1
µA
2 _______________________________________________________________________________________
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