DS273 Просмотр технического описания (PDF) - Maxim Integrated
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DS273 Datasheet PDF : 20 Pages
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Cache-Memory Battery-Backup Management IC
BUCK REGULATOR AND POWER MUX CIRCUIT ELECTRICAL CHARACTERISTICS
(VIN = +10.8V to +13.2V, TA = -20°C to +70°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Auxiliary Input Trip Threshold
Auxiliary Input Trip Hysteresis
Multiplexer Delay
Break-Before-Make
SYMBOL
VTRIP
VHYS-TRIP
tBREAK
CONDITIONS
(Note 1)
Relative to actual VTRIP
Switching to/from BATT+
(Note 11)
Power Multiplexer On-Resistance
Regulator Output Voltage Range
DIV Pin Voltage Range
Regulator Output Voltage Error
Low-Battery Threshold
Adjustment Range
RMUX
VREG
VDIV
VERR-REG
VSLEEP
IMUX = 10mA, BATT+ or AUX source
Set by VDIV pin voltage
(Note 9)
LO_BATT Pin Voltage Range
VREF Voltage
VREF Load Range
(Equivalent Resistance)
VLO-BATT
VREF
IREF
Buck Regulator Switching Period tSW-REG 50mA (Note 9)
Regulator Undervoltage Lockout VUVLO-REG
Switching Power
pFET Resistance
RDSON-SP
IOUT = 100mADC
BATT+ = 3.0V, VAUX = 0 (Note 10)
Switching Power
nFET Resistance
nFET Off Threshold
Switching Power
pFET Overcurrent Limit
RDSON-SN
IOFFN
IOUT = 100mADC
BATT+ = 3.0V, VAUX = 0 (Note 10)
IOCLP
Switching Power
nFET Overcurrent Limit
IOCLN
VREG Pin Leakage
ILKG-REG
MIN TYP MAX UNITS
2.85 2.93 3.00
V
50
80
150
mV
1
µs
0.6
1.0
0.9
2.5
V
0.4
VREF
V
-5.0
+5.0
%
2.75
3.00
V
0.6
VREF
V
1.220 1.238 1.260
V
1.22
126.00 µA
1000
10
k
500
ns
2.45
2.70
V
0.6
1.2
0
40
80
mA
500 750 1000 mA
400 650 900
mA
-2
+2
µA
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