Electrical characteristics (continued) – Rainbow Electronics MAX5066 User Manual
Page 3
MAX5066
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 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OSCILLATOR
R
RT
= 12.4k
Ω
1000
Switching Frequency
f
SW
1MHz (max)
switching
frequency per
phase
R
RT
= 127k
Ω
100
kHz
f
SW
= 250kHz nominal, R
RT
= 50k
Ω
-7.5
+7.5
Switching Frequency Accuracy
f
SW
= 1MHz nominal, R
RT
= 12.4k
Ω
-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
Average Current-Limit Threshold
V
CL_
V
CSP_
- V
CSN_
20.4
22.5
24.75
mV
Reverse Current-Limit Threshold
V
RCL_
V
CSP_
- V
CSN_
-3.13
-1.63
-0.1
mV
Cycle-by-Cycle Current-Limit
Threshold
V
CLpk_
V
CSP_
- V
CSN_
52.5
mV
Cycle-by-Cycle Current-Limit
Response Time
t
R
260
ns
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_
1.9835
k
Ω
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
-3dB Bandwidth
f
-3dB
4
MHz
V
CSP_
= 5.5V, sinking
120
CSP_ Input Bias Current
I
CSA(IN)
V
CSP_
= 0V, sourcing
30
µA