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MAX1621 Datasheet(PDF) 5 Page - Maxim Integrated Products

Part # MAX1621
Description  Digitally Adjustable LCD Bias Supplies
PDF  20 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1621 Datasheet(HTML) 5 Page - Maxim Integrated Products

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Digitally Adjustable LCD Bias Supplies
_______________________________________________________________________________________
5
TIMING CHARACTERISTICS
(VDD = 3.3V, VBATT = 10V, TA = -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted. Limits over this
temperature range are guaranteed by design.)
CONDITIONS
4
Stop Condition SCL_ to SDA_
Setup Time
µs
tSU:STO
µs
4
tHD:STA
Start Condition SDA_ to SCL_
Hold Time
µs
4.7
tSU:STA
Start Condition SCL_ to SDA_
Setup Time
µs
4
tHIGH
SCL High Time
µs
4.7
tLOW
SCL Low Time
ns
300
tF
SCL/SDA Fall Time
µs
1
t1
Pulse Width High (UP, DN)
µs
1
tR
SCL/SDA Rise Time
ns
0
tHD:DAT
SCL_ to SDA_ Data-Hold Time
ns
500
tSU:DAT
SDA_ to SCL_ Data-Setup Time
µs
1
t2
Pulse Width Low (UP, DN)
µs
1
t3
Pulse Separation (UP, DN)
µs
1
t4
Counter Reset Time
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
Note 1: The setting in the DAC is guaranteed to remain valid as long as VDD is greater than the UVLO threshold.
Note 2: BATT Operating Range is guaranteed by the Microsecond-Volt Time Constant specification.
Note 3: Current sourced from a pin is denoted as positive current. Current sunk into a pin is denoted as negative current.
Note 4: Guaranteed by design.
__________________________________________Typical Operating Characteristics
(VDD = 5V, VBATT = 10V, L1 = 100µH, TA = +25°C, unless otherwise noted.)
0.70
0.75
0.80
0.85
0.90
0.95
1.00
0
10203040506070
EFFICIENCY vs. OUTPUT CURRENT
OUTPUT CURRENT (mA)
+25V
+15V
0.70
0.75
0.80
0.85
0.90
0.95
1.00
0
10203040506070
EFFICIENCY vs. OUTPUT CURRENT
OUTPUT CURRENT (mA)
-25V
-15V
0.70
0.75
0.80
0.85
0.90
0.95
1.00
12
14
16
18
20
22
24
26
EFFICIENCY vs. OUTPUT VOLTAGE
OUTPUT VOLTAGE (V)
+10mA
+20mA
1
SCL Falling Time to SDA Valid
Master Clocking in Data
µs
tDV
MAX1620 (Figure 1)
MAX1621 (Figures 2 and 3)



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