MAX1621 データシートの表示（PDF） - Maxim Integrated
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MAX1621 Datasheet PDF : 20 Pages
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Digitally Adjustable LCD Bias Supplies
ELECTRICAL 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.)
PARAMETER
SWITCHING REGULATOR
VDD Operating Range
VDD Supply Current
Positive Output Voltage
Negative Output Voltage
Undervoltage Lockout Threshold (Note 1)
BATT Operating Range (Note 2)
Microsecond-Volt Time Constant (k-factor)
FB Regulation Voltage
FB Input Current (Note 3)
POK Threshold Voltage
REFERENCE AND OUTPUT
REF Voltage
REF Load Regulation
CONDITIONS
Operating mode, output in regulation
Shutdown mode, VSHDN = VDD
4V ≤ BATT ≤ 12V
POL = VDD, 3.0V ≤ VDD ≤ 5.5V
POL = AGND, 3.0V ≤ VDD ≤ 5.5V
FB = REF + 100mV
FB = 0V - 50mV
Voltage on POK rising
No load
0µA ≤ IREF ≤ 25µA
DOUT Maximum Output Voltage (Note 3) 0µA ≤ IDOUT ≤ 40µA
DOUT Minimum Output Voltage (Note 3)
DOUT Differential Nonlinearity
DIGITAL INPUTS AND OUTPUTS
UP, DN, SHDN, POL Input High Voltage
UP, DN, SHDN, POL Input Low Voltage
SCL, SDA, SUS Input High Voltage
SCL, SDA, SUS Input Low Voltage
SDA Output Low Voltage
-20µA ≤ IDOUT ≤ 0µA
Guaranteed monotonic
3.0V ≤ VDD ≤ 3.6V
VDD = 5.5V
3.0V ≤ VDD ≤ 3.6V
VDD = 5.5V
ISDA = -6mA
MIN TYP MAX UNITS
3.0
150
1.5
1.8
16
1.44
-10
-30
-10
0.957
1.5
0
0.992
5.5
250
20
27
-27
2.8
20
24
1.56
10
10
120
1.027
V
µA
V
V
V
V
µs-V
V
mV
nA
V
1.44
1.5
1.56
V
5
10
mV
REF -
0.02
REF +
0.02
V
0
0.01
V
±1
LSB
1.4
V
2.3
0.6
V
1.4
V
2.3
0.6
V
0.4
V
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