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MAX20094 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX20094
Description  Backup Battery Charger and Boost Controller
PDF  32 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX20094 Datasheet(HTML) 4 Page - Maxim Integrated Products

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Electrical Characteristics (continued)
(VSUP1 = 4V, VSUP2 = 14V, VBATTP = VBATTS = 3.5V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA =
+25°C.) (Note 1 )
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Current
ISUP2_STB
BOOST I2C bit enabled, VEN1B = 0V,
VSUP1 =
0 to 6V, VSUP2 = VSG1 = 14V, no
switching
26
55
µA
Boost Mode Fixed-
Output Voltage
VSUP2
VSUP2 is factory-programmable
6.076
6.2
6.355
V
6.37
6.5
6.663
6.664
6.8
6.97
6.958
7.1
7.278
5.39
5.5
5.7
7.84
8
8.20
8.82
9
9.27
9.8
10
10.25
11.76
12
12.30
Boost Output
Overvoltage- Falling
Threshold (Boost Wakes
Up Below this
Threshold)
BOOST_OV_
F
104
107
110.5
%
Boost Output
Overvoltage- Falling
Hysteresis
6
%
Boost Output
Overvoltage- Rising
Threshold (Boost Enters
Sleep Mode Above this
Threshold)
VSUP2_R
110
113
116
%
Boost Undervoltage
Lockout
BST_UVLO
Falling
65
%
Rising
85
Transconductance (from
FBB to COMP)
gm
VBIAS = 5.5V (Note 2)
250
µS
G1 Drive Strength
G1
VSG1 = 6.8V, G1 not active
1.75
kΩ
G1 Activation Time
5nF MOSFET capacitance from SG1 to
G1, OV falling until G1 reaches 4.5V
below SG1; boost is ready to run within
10μs (typ) once BOOST_OV_F is tripped
10
50
μs
Dead Time
DL low to DH rising
20
ns
DH low to DL rising
20
Minimum On-Time
tON,MIN
120
ns
Minimum Off-Time
tOFF,MIN
60
ns
PWM Switching-
Frequency Range
fSW
1.9
2.1
2.3
MHz
0.36
0.4
0.44
CS_ Current Limit
VLIMIT
VCSP - VCSN
40
50
60
mV
MAX20094/MAX20095
Backup Battery Charger and Boost Controller
www.maximintegrated.com
Maxim Integrated | 4



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