Manual

MAX15034
Configurable, Single-/Dual-Output, Synchronous
Buck Controller for High-Current Applications
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
REG
= V
DD
= V
EN_
= +5V, T
A
= T
J
= T
MIN
to T
MAX
, unless otherwise noted, circuit of Figure 6. Typical values are at T
A
= +25°C.)
(Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
C
DH_
or C
DL_
= 5nF
-7.5 +7.5
Nonoverlap Time (Dead Time) t
NO
f
SW
= 1MHz nominal, R
RT
= 12.4kΩ -10 +10
%
RT/CLKIN Output Voltage V
RT/CLKIN
1.225 V
RT/CLKIN Current Sourcing
Capability
I
RT/CLKIN
0.5 mA
RT/CLKIN Logic-High Threshold V
RT/CLKIN_H
2.4 V
RT/CLKIN Logic-Low Threshold V
RT/CLKIN_L
0.8 V
RT/CLKIN High Pulse Width t
RT/CLKIN
30 ns
RT/CLKIN Synchronization
Frequency Range
f
RT/CLKIN
200 2000 kHz
CURRENT LIMIT
Internal Average Current-Limit
Threshold
V
CL_
V
CSP_
- V
CSN_
20.4 22.5 24.75 mV
Reverse Average Current-Limit
Threshold
V
RCL_
V
CSP_
- V
CSN_
-3.0 -1.53 -0.1 mV
External Average Current-Limit
Threshold Adjustment
V
CL_ADJ
Resistor-divider connected from REG
to AVGLIMIT to AGND
V
AVGLIMIT
-
0.6/36
V
AVGLIMIT Ground Threshold
Voltage
V
AVGLIMIT_GND
550 mV
Leakage Current at AVGLIMIT I
AVGLIMIT
V
AVGLIMIT
= 3V 100 nA
DIGITAL FAULT INTEGRATION (DF_)
Number of Switching Cycles to
Shutdown in Current Limit
NS
DF_
32,768
Clock
cycles
Number of Switching Cycles to
Recover from Shutdown
NR
DF_
524,288
Clock
cycles
CURRENT-SENSE AMPLIFIER
CSP_ to CSN_ Input Resistance R
CS_
3.8 kΩ
V
IN
= V
REG
= 4.75V to 5.5V or
V
IN
= 5V to 10V
-0.3 +3.6 V
Common-Mode Range V
CMR(CS)
V
IN
= 7V to 28V -0.3 +5.5 V
Input Offset Voltage V
OS(CS)
100 μV
Amplifier Gain A
V(CS)
36 V/V