MAX1763 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1763 Datasheet PDF : 18 Pages
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1.5A, Low-Noise, 1MHz, Step-Up
DC-DC Converter
ELECTRICAL CHARACTERISTICS
(CLK/SEL = ONB = FB = PGND = GND, ISET = REF, OUT = POUT, VONA = VAIN = VOUT = 3.6V, TA = -40°C to +85°C, unless other-
wise noted.) (Note 8)
PARAMETER
DC-DC CONVERTER
Input Voltage Range (Note 1)
Minimum Startup Voltage (Note 2)
Frequency in Startup Mode
Internal Oscillator Frequency
CONDITIONS
ILOAD < 1mA, TA = +25°C
VOUT = 1.5V
CLK/SEL = OUT
MIN
MAX UNITS
5.5
V
1.1
V
125
1000 kHz
0.75
1.25 MHz
Oscillator Maximum Duty Cycle
(Note 3)
80
91
%
External Clock Frequency Range
0.6
1.2
MHz
Output Voltage
FB Regulation Voltage
FB Input Current
Output Voltage Adjust Range
VFB < 0.1V, CLK/SEL = OUT, includes load regulation
for 0 < ILX < 1.1A
Adjustable output, CLK/SEL = OUT, includes load
regulation for 0 < ILX < 1.1A
VFB = 1.35V
3.17
1.215
2.5
3.38
V
1.270
V
100
nA
5.5
V
Output Voltage Lockout
Threshold (Note 4)
Rising edge
2.00
2.30
V
ISET Input Leakage Current
Supply Current in Shutdown
No-Load Supply Current, Low-
Power Mode (Note 5)
VISET = 1.25V
V ONB = 3.6V, VONA = 0V
CLK/SEL = GND, AIN = OUT
50
nA
10
µA
200
µA
Gain Block Supply Current
DC-DC SWITCHES
POUT Leakage Current
LX Leakage Current
Switch On-Resistance
N-Channel Current Limit
P-Channel Turn-Off Current
REFERENCE
Reference Output Voltage
Reference Load Regulation
Reference Supply Rejection
GAIN BLOCK
AIN Reference Voltage
AIN Input Current
Transconductance
AO Output Low Voltage
AO Output High Leakage
VAIN < (VOUT - 1.4V), gain block enabled
VLX = 0V, VOUT = 5.5V
VLX = V ONB = VOUT = 5.5V, VONA = 0V
N-channel
P-channel
CLK/SEL = GND
IREF = 0A
-1µA < IREF < 50µA
2.5V < VOUT < 5V
IAO = 20µA
VAIN = 1.5V
VAO = 1V, 10µA < IAO < 100µA
VAIN = 0.5V, IAO = 100µA
VAIN = 1.5V, VAO = 5.5V
2.0
10
1.220
910
5
50
µA
10
µA
10
µA
0.13
Ω
0.25
3.4
A
240
mA
1.270
V
15
mV
5
mV
970
mV
±30
nA
16
mS
0.4
V
1
µA
4 _______________________________________________________________________________________
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