ML4903
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
BUCK REGULATOR
(Continued)
V
FB
Threshold Voltage (Note 2)
RANGE = 0, (D3-D0) Code = 0000
RANGE = 0, (D3-D0) Code = 0001
RANGE = 0, (D3-D0) Code = 0010
RANGE = 0, (D3-D0) Code = 0011
RANGE = 0, (D3-D0) Code = 0100
RANGE = 0, (D3-D0) Code = 0101
RANGE = 1, (D3-D0) Code = 0000
RANGE = 1, (D3-D0) Code = 0001
RANGE = 1, (D3-D0) Code = 0010
RANGE = 1, (D3-D0) Code = 0011
RANGE = 1, (D3-D0) Code = 0100
RANGE = 1, (D3-D0) Code = 0101
RANGE = 1, (D3-D0) Code = 0110
RANGE = 1, (D3-D0) Code = 0111
RANGE = 1, (D3-D0) Code = 1000
RANGE = 1, (D3-D0) Code = 1001
RANGE = 1, (D3-D0) Code = 1010
RANGE = 1, (D3-D0) Code = 1011
RANGE = 1, (D3-D0) Code = 1100
RANGE = 1, (D3-D0) Code = 1101
RANGE = 1, (D3-D0) Code = 1110
I
SENSE
Threshold Voltage
I
SENSE
Hysteresis
PROTECT Threshold Voltage
PROTECT Hysteresis
PROTECT Charging Current
PROTECT Leakage Current
Transition Time,
P DRV and N DRV
SUPPLY
I
DD
V
DD
Current
SHDN
= 0V
DAC (D3-D0) Code = 0000
SHDN
= 5V, V
FB
= 5V
SHDN
= 5V, V
FB
= 0V, C
L
= 5000pF
I
CC
V
CC
Current
650
1
20
1
10
900
2
µA
mA
mA
µA
C
L
= 5000pF, 10-90%
V(I
SENSE
) = -120mV
3.2
1.8
2.050
2.000
1.950
1.900
1.850
1.800
3.500
3.400
3.300
3.200
3.100
3.000
2.900
2.800
2.700
2.600
2.500
2.400
2.300
2.200
2.100
-80
10
3.5
2
30
+100
40
3.8
2.2
2.071
2.020
1.970
1.919
1.869
1.818
3.535
3.434
3.333
3.232
3.131
3.030
2.929
2.828
2.727
2.626
2.525
2.424
2.323
2.222
2.121
2.092
2.04
1.989
1.938
1.887
1.836
3.570
3.468
3.366
3.264
3.162
3.060
2.958
2.856
2.754
2.652
2.550
2.448
2.346
2.244
2.142
-117
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
mV
mV
V
V
µA
nA
ns
(Continued)
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
Limits are guaranteed by 100% testing, sampling, or correlation with worst case test conditions.
Note 2:
Codes 00110 to 01111, and 11111 are not valid; applying these codes to the DAC will shut off P DRV and N DRV.
4
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
