參數(shù)資料
型號(hào)： MAX5921
廠商： Maxim Integrated Products, Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： -48V Hot-Swap Controllers with External Rsense and High Gate Pulldown Current
中文描述： -48V熱插拔控制器，外置RSENSE、提供較高的柵極下拉電流
文件頁(yè)數(shù)： 3/18頁(yè)
文件大小： 313K
代理商： MAX5921
M
-48V Hot-Swap Controllers with External
R
SENSE
and High Gate Pulldown Current
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
EE
= 0V, V
DD
= 48V, T
A
= -40
°
C to +85
°
C, unless otherwise noted. Typical values are at T
A
= +25
°
C, unless otherwise noted.) (Notes 1, 4)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWRGD OUTPUT SIGNAL (REFERENCED TO DRAIN)
DRAIN Input Current
I
DRAIN
V
DRAIN
= 48V
V
DRAIN
- V
EE
threshold for power-good
condition, DRAIN decreasing
10
80
250
μA
DRAIN Threshold for PWRGD
V
DL
1.1
1.7
2.0
V
GATE High Threshold
V
GH
V
GATE
- V
GATE
, decreasing
V
PWRGD
= 80V, V
DRAIN
= 48V
V
PWRGD
= 80V, V
DRAIN
= 0V
V
DRAIN
- V
EE
< V
DL
, I
SINK
= 5mA
(A, E versions)
1.0
1.6
2.0
10
10
V
PWRGD,
PWRGD
Output
Leakage
I
OH
μA
PWRGD
Low Voltage
(V
PWRGD
- V
EE
)
V
OL
0.11
0.4
V
PWRGD Low Voltage
(V
PWRGD
- V
DRAIN
)
OVERTEMPERATURE PROTECTION
Overtemperature Threshold
Overtemperature Hysteresis
AC PARAMETERS
OV High to GATE Low
UV Low to GATE Low
OV Low to GATE High
UV High to GATE High
SENSE High to GATE Low
V
OL
V
DRAIN
= 5V, I
SINK
= 5mA (B, F versions)
0.11
0.4
V
T
OT(TH)
T
HYS
Junction temperature, temperature rising
See
Thermal Shutdown
section
135
20
°
C
°
C
t
PHLOV
t
PHLUV
t
PLHOV
t
PLHUV
t
PHLSENSE
Figures 1a, 2
Figures 1a, 3
Figures 1a, 2
Figures 1a, 3
Figures 1a, 4a
Time from continuous
current limit to GATE
shutdown (see
Overcurrent
Fault Integrator
section),
Figures 1b, 4b
0.5
0.4
3.3
8.4
1
μs
μs
μs
ms
μs
A, B versions
0.35
0.5
0.65
Current Limit to GATE Low
t
PHLCL
E, F versions
1.4
2.0
2.6
ms
Figures 1a, 5a; A and E versions
8.2
DRAIN Low to
PWRGD
Low
DRAIN Low to (PWRGD - DRAIN)
High
t
PHLDL
Figures 1a, 5a; B and F versions
8.2
ms
Figures 1a, 5b; A and E versions
8.2
GATE High to
PWRGD
Low
GATE High to (PWRGD - DRAIN)
High
TURN-OFF
t
PHLGH
Figures 1a, 5b; B and F versions
8.2
ms
Latch-Off Period
t
OFF
(Note 3)
A, B, E, F versions
128 x
t
PHLCL
ms
Note 1:
All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to V
EE
,
unless otherwise specified.
Gate pulldown current after the current limit to GATE low (t
PHLCL
) time has elapsed.
Minimum duration of GATE pulldown following a circuit breaker fault. The MAX5921_ automatically restarts after a circuit
breaker fault. The MAX5939_ is latched off and can be reset by toggling UV low. The GATE pulldown does not release until
t
OFF
has elapsed.
The min/max limits are 100% production tested at +25
°
C and +85
°
C and guaranteed by design at -40
°
C.
Note 2:
Note 3:
Note 4:
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