Electrical characteristics – Rainbow Electronics MAX1621 User Manual
Page 4
MAX1620/MAX1621
Digitally Adjustable LCD Bias Supplies
4
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Operating mode, output in regulation
µA
150
250
0µA
≤
I
REF
≤
25µA
No load
REF Load Regulation
Voltage on POK rising
V
POL = V
DD
, 3.0V
≤
V
DD
≤
5.5V
FB = 0V - 50mV
3.0 5.5
4V
≤
BATT
≤
12V
V
DD
Operating Range
FB = REF + 100mV
POL = AGND, 3.0V
≤
V
DD
≤
5.5V
mV
5
10
V
1.44
1.5
1.56
REF Voltage
V
27
Positive Output Voltage
0.957
0.992
1.027
Shutdown mode, V
SHDN
= V
DD
20
-10
120
FB Input Current (Note 3)
V
DD
Supply Current
V
-30
10
mV
-10
0
10
V
1.5 2.8
Undervoltage Lockout Threshold (Note 1)
nA
1.44
1.5
1.56
µs-V
Microsecond-Volt Time Constant (k-factor)
16
24
V
1.8 20
BATT Operating Range (Note 2)
-27
Negative Output Voltage
FB Regulation Voltage
V
POK Threshold Voltage
DOUT Maximum Output Voltage (Note 3)
V
REF -
REF +
0.02
0.02
0µA
≤
I
DOUT
≤
40µA
-20µA
≤
I
DOUT
≤
0µA
DOUT Minimum Output Voltage (Note 3)
V
0
0.01
Guaranteed monotonic
DOUT Differential Nonlinearity
LSB
±
1
UP, DN, SHDN, POL Input High Voltage
3.0V
≤
V
DD
≤
3.6V
1.4
V
DD
= 5.5V
2.3
V
UP, DN, SHDN, POL Input Low Voltage
0.6
V
3.0V
≤
V
DD
≤
3.6V
1.4
V
DD
= 5.5V
2.3
SCL, SDA, SUS Input Low Voltage
0.6
V
SDA Output Low Voltage
I
SDA
= -6mA
0.4
V
CONDITIONS
UNITS
MIN
TYP
MAX
PARAMETER
ELECTRICAL CHARACTERISTICS
(V
DD
= 3.3V, V
BATT
= 10V,
T
A
= -40°C to +85°C
. Typical values are at T
A
= +25°C, unless otherwise noted. Limits over this
temperature range are guaranteed by design.)
V
SCL, SDA, SUS Input High Voltage
V
SWITCHING REGULATOR
REFERENCE AND OUTPUT
DIGITAL INPUTS AND OUTPUTS