MAX16930 Datasheet, PDF (4/29 Pages) Maxim Integrated Products – 2MHz, 36V, Dual Buck with Preboost and 20μA Quiescent Current

MAX16930/MAX16931
2MHz, 36V, Dual Buck with Preboost and
20µA Quiescent Current
ELECTRICAL CHARACTERISTICS (continued)
(V_IN = 14V, V_BIAS = 5V, C_BIAS = 6.8μF, T_A = T_J = -40NC to +125NC, unless otherwise noted.) (Note 2)
PARAMETER
DL1, DL2 Pullup Resistance
DL1, DL2 Pulldown Resistance
PGOOD1, PGOOD2 Threshold
PGOOD1, PGOOD2 Leakage
Current
PGOOD1, PGOOD2 Startup
Delay Time
PGOOD1, PGOOD2 Debounce
Time
INTERNAL LDO: BIAS
Internal BIAS Voltage
BIAS UVLO Threshold
Hysteresis
SYMBOL
P_{GOOD_H}
P_{GOOD_F}
CONDITIONS
V_BIAS = 5V, I_{DL_} = -100mA
V_BIAS = 5V, I_{DL_} = +100mA
% of V_{OUT_}, rising
% of V_{OUT_}, falling
V_PGOOD1,2 = 5V, T_A = +25NC
Buck 1 and buck 2 after soft-start
is complete
Fault detection
V_IN > 6V
V_BIAS rising
V_BIAS falling
MIN TYP
4
1.5
85
90
80
85
0.01
64
8
20
4.75
5
3.1
2.7
2.9
0.2
External V_CC Threshold
THERMAL OVERLOAD
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
EN LOGIC INPUT
High Threshold
Low Threshold
Input Current
PREBOOST
Minimum On Time
Minimum Off Time
Switching Frequency
Current Limit
INS Unlock Threshold
INS Off Threshold
INS On Threshold
V_TH,EXTVCC EXTVCC rising, HYST = 110mV
(Note 4)
(Note 4)
EN1, EN2 logic inputs only, T_A = +25NC
TON_BST
TOFF_BST
f_BOOST
I_LIMBST
V_INS,UV
V_INS,OFF
V_INS,ON,SW
V_FSELBST = 0V, R_FOSC = 13.7kI
V_FSELBST = V_BIAS, R_FOSC = 13.7kI
CS3P - CS3N
One-time latch during startup; preboost
is disabled until the V_INS rises above this
threshold
Battery rising and EN3 high, preboost
turns off if V_INS is above this threshold
Battery falling and EN3 high, preboost
turns back on when V_INS falls below this
threshold
1.8
1.98
0.4
108
1
1.2
1.1
3
170
20
0.01
60
60
2.2
0.44
120
1.05
1.25
1.15
MAX
8
3
95
90
1
UNIT
I
I
%
FA
Cycles
40
Fs
5.25
V
3.4
V
V
3.2
V
NC
NC
V
0.8
V
1
FA
ns
ns
2.42
MHz
0.48
132
mV
1.1
V
1.3
V
1.2
Maxim Integrated
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