參數(shù)資料
型號： MAX1902ETJ
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
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
封裝： 5 X 5 MM, 0.80 MM, MO-220WHHD-2, TQFN-32
文件頁數(shù)： 3/33頁
文件大小： 649K
代理商： MAX1902ETJ
M
500kHz Multi-Output, Low-Noise Power-Supply
Controllers for Notebook Computers
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, both PWMs on, SYNC = V
L
, V
L
load = 0, REF load = 0,
SKIP
= 0,
T
A
= 0
°
C to +85
°
C
, unless otherwise noted. Typical
values are at T
A
= +25
°
C.)
PARAMETER
CONDITIONS
MIN
95
96.5
200
200
TYP
97
98
MAX
UNITS
SYNC = V
L
SYNC = 0 (Note 2)
Not tested
Not tested
Not tested
Maximum Duty Factor
%
SYNC Input High-Pulse Width
SYNC Input Low-Pulse Width
SYNC Rise/Fall Time
SYNC Input Frequency Range
ns
ns
ns
kHz
200
583
400
Current-Sense Input Leakage Current
V+ = V
L
= 0,
CSL3 = CSH3 = CSL5 = CSH5 = 5.5V
0.01
10
μA
FLYBACK CONTROLLER
V
DD
Regulation Threshold
SECFB Regulation Threshold
DL Pulse Width
V
DD
Shunt Threshold
V
DD
Shunt Sink Current
V
DD
Leakage Current
12V LINEAR REGULATOR
(Note 3)
12OUT Output Voltage
12OUT Current Limit
Quiescent V
DD
Current
INTERNAL REGULATOR AND REFERENCE
Falling edge (Note 3)
Falling edge (MAX1901/MAX1904)
V
DD
< 13V or SECFB < 2.44V
Rising edge, hysteresis = 1% (Note 3)
V
DD
= 20V (Note 3)
V
DD
= 5V, off mode (Notes 3, 4)
13
2.44
14
2.60
V
V
μs
V
mA
μA
0.75
18
10
20
30
13V < V
DD
< 18V, 0 < I
LOAD
< 120mA
12OUT forced to 11V, V
DD
= 13V
V
DD
= 18V, run mode, no 12OUT load
11.65
12.10
150
50
12.50
V
mA
μA
100
V
L
Output Voltage
SHDN
= V+, RUN/ON3 = TIME/ON5 = 0,
5.4V < V+ < 30V, 0mA < 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
3.6
4.5
2.5
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
V+ = 5.5V to 30V, both SMPSs off, includes
current into
SHDN
2.4
50
5
V+ Standby Supply Current
30
60
μA
V+ Standby Supply Current in Dropout
V+ = 4.2V to 5.5V, both SMPSs off, includes
current into
SHDN
50
200
μA
V+ Shutdown Supply Current
V+ = 4.0V to 30V,
SHDN
= 0
4
10
μA
(Note 3)
2.5
4
Quiescent Power Consumption
Both SMPSs enabled,
FB3 = FB5 = 0,
CSL3 = CSH3 = 3.5V,
CSL5 = CSH5 = 5.3V
MAX1901/MAX1904
1.5
4
mW
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