MAX1537ETX Maxim Integrated, MAX1537ETX Datasheet - Page 7
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MAX1537ETX
Manufacturer Part Number
MAX1537ETX
Description
Current & Power Monitors & Regulators
Manufacturer
Maxim Integrated
Datasheet
1.MAX1537ETX-T.pdf
(38 pages)
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
I
LDO5
Operating Frequency (Note 1)
Maximum Duty Factor (Note 1)
Minimum On-Time
CURRENT LIMIT
ILIM_ Adjustment Range
Current-Limit Threshold (Fixed)
Current-Limit Threshold
(Adjustable)
INTERNAL FIXED LINEAR REGULATORS
LDO5 Output Voltage
LDO5 Undervoltage-Lockout
Fault Threshold
LDO3 Output Voltage
AUXILIARY LINEAR REGULATOR (MAX1537 ONLY)
LDOA Voltage Range
INA Voltage Range
LDOA Regulation Threshold,
Internal Feedback
ADJA Regulation Threshold,
External Feedback
ADJA Dual-Mode Threshold
Secondary Feedback
Regulation Threshold
INA Quiescent Current
REFERENCE (REF)
Reference Voltage
High-Efficiency, 5x Output, Main Power-Supply
= I
LDO3
PARAMETER
= I
LDOA
_______________________________________________________________________________________
IN
= no load, T
= 12V, both SMPS enabled, V
Controllers for Notebook Computers
A
= -40°C to +85°C, unless otherwise noted.) (Note 4)
SYMBOL
t
V
V
ON(MIN)
V
V
V
V
D
V
f
LIMIT
LIMIT
V
LDO5
LDO3
LODA
I
OSC
ADJA
MAX
INA
REF
INA
_
_
FSEL = GND
FSEL = REF
FSEL = V
FSEL = GND
FSEL = REF
FSEL = V
V
V
ON3 = ON5 = GND, 6V < V
0 < I
Rising edge, hysteresis = 1%
Standby mode, 6V < V
0 < I
ADJA = GND, 0 < I
V
0 < I
V
ADJA
V
V
V
CSH
CSH
INA
INA
INA
INA
CC
CC
LDO5
LOAD
LDOA
= 4.5V to 5.5V, I
> 13V
> V
- V
= 24V, I
_ - V
_ - V
= 5V, FSEL = REF, SKIP = GND, V
LDOA
LDOA
CC
CC
CSL
CSL
< 100mA
< 100mA
< 120mA, V
LDOA
_ , ILIM_ = V
_
+ 1V
CONDITIONS
= no load
LDOA
REF
V
V
V
LDOA
ILIM
ILIM
ILIM
IN
= 0
< 28V,
< 120mA,
CC
_ = 2.00V
_ = 1.00V
_ = 0.50V
IN
> 5.0V and
< 26V,
ILIM_
11.40
= V
3.75
3.20
1.94
0.10
0.63
1.97
MIN
170
240
375
170
0.5
4.8
91
91
91
67
90
40
5
6
LDO5
, V
INA
= 15V, V
12.55
MAX
V
4.30
3.43
2.08
0.25
0.97
2.03
165
230
330
575
250
230
110
5.1
83
60
23
24
REF
LDOA
UNITS
= 12V,
kHz
mV
mV
µA
ns
%
V
V
V
V
V
V
V
V
V
V
V
7