MAX1765(2000) Просмотр технического описания (PDF) - Maxim Integrated
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MAX1765
(Rev.:2000)
(Rev.:2000)
Maxim Integrated
MAX1765 Datasheet PDF : 19 Pages
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800mA, Low-Noise, Step-Up DC-DC Converter
with 500mA Linear Regulator
ELECTRICAL CHARACTERISTICS
(VOUT = VPOUT = VINL = VONA = VONL = 3.6V, CLK/SEL = FBL = ONB = TRACK = PGND = GND, ISET = REF (bypassed with
0.22µF), LX = open, OUTL = open (bypassed with 4.7µF), TA = -40°C to +85°C, unless otherwise noted.) (Note 6)
PARAMETER
DC-DC CONVERTER
FB Regulation Voltage
OUT Voltage in Track Mode
SYMBOL
CONDITIONS
VFB
CLK/SEL = OUT, 0 < ILX < 0.55A
VOUTL > 2.0V, INL = POUT
MIN TYP MAX UNITS
1.210
VOUTL
+ 0.4
1.280
V
VOUTL
V
+ 0.6
Startup to Normal Mode
Transition Voltage
Rising edge only (Note 2)
2.00
2.30
V
Supply Current in Normal Mode
(Note 3)
CLK/SEL = ONL = GND, no load
200
µA
Supply Current in
Low-Noise PWM Mode (Note 3
Supply Current in Shutdown
DC-DC SWITCHES
POUT Leakage Current
LX Leakage Current
Switch On-Resistance
N-Channel Current Limit (Note 4)
P-Channel Turn-Off Current
REFERENCE
Reference Output Voltage
LINEAR REGULATOR
CLK/SEL = OUT, VFB = 1.5V, no load
ONA = ONL = GND, ONB = OUT
VLX = 0, VOUT = 5.5V
VLX = VOUT = V ONB = 5.5V, ONA = GND
N-channel
P-channel
ILIM
VISET = 1.25V, CLK/SEL = GND or OUT
CLK/SEL = GND
IREF = 0
1000
5
1.225
200
µA
10
µA
10
µA
10
µA
0.28
Ω
0.50
1600 mA
120
mA
1.275
V
Output Voltage in Internal
Feedback Mode
FBL = GND, IOUTL = 10mA
2.79
2.90
V
FBL Input Threshold
FBL Regulation Voltage
LDO Startup Voltage
Dropout Resistance
INL Supply Current in Shutdown
INL No-Load Supply Current
FBL = OUTL, IOUTL = 10mA, IREF = 0
VOUT = 2V, rising edge only
VFBL = 1V, IOUTL = 500mA
OUTL = ONA = ONL = GND
IOUTL = 0, VINL = 5.5V
150
1.225
2.15
350
mV
1.275
V
2.45
V
0.5
Ω
10
µA
250
µA
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