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参数资料
型号： MAX1904ETJ
厂商： MAXIM INTEGRATED PRODUCTS INC
元件分类： 稳压器
英文描述： 500kHz Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers
中文描述： 0.2 A DUAL SWITCHING CONTROLLER, 550 kHz SWITCHING FREQ-MAX, QCC32
封装： 5 X 5 MM, 0.80 MM, MO-220WHHD-2, TQFN-32
文件页数： 5/33页
文件大小： 649K
代理商： MAX1904ETJ
M
500kHz Multi-Output, Low-Noise Power-Supply
Controllers for Notebook Computers
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS
(V+ = 15V, both PWMs on, SYNC = V
L
, V
L
load = 0, REF load = 0,
SKIP
= 0,
T
A
= -40
°
C to +85
°
C
, unless otherwise noted.) (Note 7)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MAIN SMPS CONTROLLERS
Input Voltage Range
4.2
30.0
V
3V Output Voltage in Adjustable Mode
V+ = 4.2V to 30V, CSH3 - CSL3 = 0,
CSL3 tied to FB3
2.42
2.58
V
3V Output Voltage in Fixed Mode
V+ = 4.2V to 30V, 0 < CSH3 - CSL3
< 80mV, FB3 = 0
3.20
3.47
V
5V Output Voltage in Adjustable Mode
V+ = 4.2V to 30V, CSH5 - CSL5 = 0,
CSL5 tied to FB5
2.42
2.58
V
5V Output Voltage in Fixed Mode
V+ = 5.3V to 30V, 0 < CSH5 - CSL5
< 80mV, FB5 = 0
4.85
5.25
V
Output Voltage Adjust Range
Adjustable-Mode Threshold Voltage
Either SMPS
Dual-mode comparator
CSH3 - CSL3 or CSH5 - CSL5
SKIP
= V
L
or V
DD
< 13V or SECFB < 2.44V
SYNC = V
L
SYNC = 0
SYNC = V
L
SYNC = 0 (Note 2)
REF
0.5
80
-50
450
283
95
97
400
5.5
1.1
120
-150
550
383
V
V
Current-Limit Threshold
mV
Oscillator Frequency
kHz
Maximum Duty Factor
%
SYNC Input Frequency Range
FLYBACK CONTROLLER
V
DD
Regulation Threshold
SECFB Regulation Threshold
V
DD
Shunt Threshold
V
DD
Shunt Sink Current
12V LINEAR REGULATOR
(Note 3)
12OUT Output Voltage
Quiescent V
DD
Current
INTERNAL REGULATOR AND REFERENCE
583
kHz
Falling edge (Note 3)
Falling edge (MAX1901/MAX1904)
Rising edge, hysteresis = 1% (Note 3)
V
DD
= 20V (Note 3)
13
2.44
18
10
14
2.60
20
V
V
V
mA
13V < V
DD
< 18V, 0mA < I
LOAD
< 100mA
V
DD
= 18V, run mode, no 12OUT load
11.65
12.50
100
V
μA
V
L
Output Voltage
SHDN
= V+, RUN/ON3 = TIME/ON5 = 0,
5.4V < V+ < 30V, 0 < I
LOAD
< 50mA
Falling edge, hysteresis = 1%
Rising edge of CSL5, hysteresis = 1%
No external load (Note 5)
0 < I
LOAD
< 50μA
0 < I
LOAD
< 5mA
4.7
5.1
V
V
L
Undervoltage Lockout-Fault Threshold
V
L
Switchover Threshold
REF Output Voltage
3.5
4.2
2.45
3.7
4.7
2.55
12.5
100.0
V
V
V
REF Load Regulation
mV
REF Sink Current
REF Fault Lockout Voltage
V+ Operating Supply Current
10
1.8
μA
V
μA
Falling edge
V
L
switched over to CSL5, 5V SMPS on
2.4
50
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