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MAX1620EEE+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
MAX1620/MAX1621
Digitally Adjustable LCD Bias Supplies
4 _______________________________________________________________________________________
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
mV510
V1.44 1.5 1.56REF Voltage
V27Positive 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
V1.5 2.8Undervoltage Lockout Threshold (Note 1)
nA
1.44 1.5 1.56
µs-VMicrosecond-Volt Time Constant (k-factor) 16 24
V1.8 20BATT Operating Range (Note 2)
-27Negative 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
≤ 0µADOUT Minimum Output Voltage (Note 3) V0 0.01
Guaranteed monotonicDOUT 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
MAX1620/MAX1621
Digitally Adjustable LCD Bias Supplies
_______________________________________________________________________________________ 5
TIMING 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.)
CONDITIONS
4
Stop Condition SCL_ to SDA_
Setup Time
µst
SU:STO
µs4t
HD:STA
Start Condition SDA_ to SCL_
Hold Time
µs4.7t
SU:STA
Start Condition SCL_ to SDA_
Setup Time
µs4t
HIGH
SCL High Time
µs4.7t
LOW
SCL Low Time
ns300t
F
SCL/SDA Fall Time
µs1t
1
Pulse Width High (UP, DN)
µs1t
R
SCL/SDA Rise Time
ns0t
HD:DAT
SCL_ to SDA_ Data-Hold Time
ns500t
SU
:
DAT
SDA_ to SCL_ Data-Setup Time
µs1t
2
Pulse Width Low (UP, DN)
µs1t
3
Pulse Separation (UP, DN)
µs1t
4
Counter Reset Time
UNITSMIN TYP MAXSYMBOLPARAMETER
Note 1: The setting in the DAC is guaranteed to remain valid as long as V
DD
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
(V
DD
= 5V, V
BATT
= 10V, L1 = 100µH, T
A
= +25°C, unless otherwise noted.)
0.70
0.75
0.80
0.85
0.90
0.95
1.00
010203040506070
EFFICIENCY vs. OUTPUT CURRENT
MAX1620/21-01
OUTPUT CURRENT (mA)
EFFICIENCY (%)
+25V
+15V
0.70
0.75
0.80
0.85
0.90
0.95
1.00
010203040506070
EFFICIENCY vs. OUTPUT CURRENT
MAX1620/21-02
OUTPUT CURRENT (mA)
EFFICIENCY (%)
-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
MAX1620/21-03
OUTPUT VOLTAGE (V)
EFFICIENCY (%)
+10mA
+20mA
1
SCL Falling Time to SDA Valid
Master Clocking in Data
µst
DV
MAX1620 (Figure 1)
MAX1621 (Figures 2 and 3)
MAX1620/MAX1621
Digitally Adjustable LCD Bias Supplies
6 _______________________________________________________________________________________
_____________________________Typical Operating Characteristics (continued)
(V
DD
=
5V, V
BATT
= 10V, L1 = 100µH, T
A
= +25°C, unless otherwise noted.)
0.70
0.75
0.80
0.85
0.90
0.95
1.00
-26 -24 -22 -20 -18 -16 -14 -12
EFFICIENCY vs. OUTPUT VOLTAGE
MAX1620/21-04
OUTPUT VOLTAGE (V)
EFFICIENCY (%)
-10mA
-20mA
0.70
0.75
0.80
0.85
0.90
0.95
1.00
2 4 6 8 10 12 14 16 18 20
EFFICIENCY vs. V
BATT
MAX1620/21-05
V
BATT
(V)
EFFICIENCY (%)
+20V, +10mA
-20V, -10mA
0
20
40
60
80
100
120
140
160
180
200
012345
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1620/21-06
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
100
125
150
175
200
-40 -20 0 20 40 60 80
SUPPLY CURRENT vs. TEMPERATURE
MAX1620/21-07
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
1.49
1.50
1.51
-40 -20 0 20 40 60 80
REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1620/21-10
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
0
2
4
6
8
10
12
14
16
18
20
012345
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1620/21-08
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
6
8
10
12
14
16
18
20
-40 -20 0 20 40 60 80
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX1620/21-09
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
18.0
18.5
19.0
19.5
20.0
20.5
21.0
21.5
22.0
2.5 3.0 3.5 4.0 4.5 5.0
k-FACTOR vs. SUPPLY VOLTAGE
MAX1620/21-11
SUPPLY VOLTAGE (V)
k-FACTOR (µs-V)
18.0
18.5
19.0
19.5
20.0
20.5
21.0
21.5
22.0
-60 -40 -20 0 20 40 60 80 100
k-FACTOR vs. TEMPERATURE
MAX1620/21-12
TEMPERATURE (°C)
k-FACTOR (µs-V)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MAX1620EEE+

Mfr. #:
Buy MAX1620EEE+
Manufacturer:
Maxim Integrated
Description:
Power Management Specialized - PMIC Digitally Adjustable LCD Bias Supply
Lifecycle:
New from this manufacturer.
Delivery:
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