參數(shù)資料
型號(hào)： MAX1638EEG
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
中文描述： SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO24
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-24
文件頁(yè)數(shù)： 3/16頁(yè)
文件大?。?/td> 149K
代理商： MAX1638EEG
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= V
CC
= D4 = +5V, PGND = AGND = D0–D3 = 0V, FREQ = REF,
T
A
= 0°C to +85°C
, unless otherwise noted.)
M
_______________________________________________________________________________________
3
DH = DL = 2.5V
V
DD
= 4.5V
BST - LX = 4.5V
GND (low)
REF (mid)
V
CC
(high)
100mV overdrive
FREQ = V
CC
With respect to V
REF
,
FB going low
Minimum
Maximum
D0–D4 = 0V
D0–D4, V
CC
= 5.5V
CSH = CSL = 1.3V, D0–D3 = 5V, D4 = 0V
D0–D4, V
CC
= 4.5V
CONDITIONS
-2.75
-3
1.25
1
-2
-1.25
-1
2.75
3
ns
0
30
DH, DL Dead Time
A
2
DH, DL Source/Sink Current
0.7
2
DH On-Resistance
DL On-Resistance
0.7
2
%
μA
100
CC2 Source/Sink Current
4
V
CC
V
2.4
3.0
mmho
1
k
10
CC1 Output Resistance
CC2 Transconductance
μA
±0.1
3.3
3.7
0.2
%
85
90
Maximum Duty Cycle
LG, FREQ Input Voltage
μA
50
CSH, CSL Input Current
FB Input Current
μA
4
LG, FREQ Input Current
μA
2
5
10
D0–D4 Source Current
V
2.0
Logic Input Voltage High
V
CC
- 0.1
V
0.8
Logic Input Voltage Low
UNITS
MIN
TYP
MAX
PARAMETER
CC2 Clamp Voltage
PDRV Trip Level
PDRV, NDRV Response Time
PDRV, NDRV On-Resistance
PDRV, NDRV Source/Sink Current
PDRV, NDRV Minimum On-Time
FB overdrive = 5%
V
DD
= 4.5V
PDRV = NDRV = 2.5V
ns
A
ns
75
2
0.5
100
100
38
5
FB = 3.5V
FB = 0V (Foldback)
85
15
115
70
Soft-Start Time
BST Leakage Current
To full current limit
BST = 12V, LX = 7V, REF = GND
1 / f
OSC
μA
1536
50
V
High-S peed S tep-Down Controller with
S ync hronous Rec tific ation for CPU Power
NDRV Trip Level
With respect to V
REF
,
FB going high
2
%
T
A
= +25°C
T
A
= 0°C to +85°C
T
A
= +25°C
T
A
= 0°C to +85°C
Current-Limit Trip Voltage
mV
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