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參數(shù)資料
| 型號(hào)： | LTC4269CDKD-2 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 560 kHz SWITCHING FREQ-MAX, PDSO32 |
| 封裝： | 7 X 4 MM, PLASTIC, M0-229, DFN-32 |
| 文件頁(yè)數(shù)： | 23/34頁(yè) |
| 文件大?。?/td> | 383K |
| 代理商： | LTC4269CDKD-2 |
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LTC4269-2
42692fb
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Interface Controller (Note 5)
Operating Input Voltage
Signature Range
Classification Range
On Voltage
Undervoltage Lockout
Overvoltage Lockout
At VPORTP (Note 6)
l
1.5
12.5
30.0
71.0
60
9.8
21.0
37.2
V
ON/UVLO Hysteresis Window
l
4.1
V
Signature/Class Hysteresis Window
l
1.4
V
Reset Threshold
State Machine Reset for 2-Event Classification
l
2.57
5.40
V
Supply Current
Supply Current at 57V
Measured at VPORTP Pin
l
1.35
mA
Class O Current
VPORTP = 17.5V, No RCLASS Resistor
l
0.40
mA
Signature
Signature Resistance
1.5V ≤ VPORTP ≤ 9.8V (Note 7)
l
23.25
26.00
kΩ
Invalid Signature Resistance, SHDN Invoked
1.5V ≤ VPORTP ≤ 9.8V, VSHDN = 3V (Note 7)
l
11
kΩ
Invalid Signature Resistance During Mark Event
(Notes 7, 8)
l
11
kΩ
Classification
Class Accuracy
10mA < ICLASS < 40mA, 12.5V < VPORTP < 21V
(Notes 9, 10)
l
±3.5
%
Classification Stability Time
VPORTP Pin Step to 17.5V, RCLASS = 30.9Ω,
ICLASS within 3.5% of Ideal Value (Notes 9, 10)
l
1
ms
Normal Operation
Inrush Current
VPORTP = 54V, VNEG = 3V
l
60
100
180
mA
Power FET On-Resistance
Tested at 600mA into VNEG, VPORTP = 54V
l
0.7
1.0
Ω
Power FET Leakage Current at VNEG
VPORTP = SHDN = VNEG = 57V
l
1
A
Digital Interface
SHDN Input High Level Voltage
l
3
V
SHDN Input Low Level Voltage
l
0.45
V
SHDN Input Resistance
VPORTP = 9.8V, SHDN = 9.65V
l
100
kΩ
PWRGD, T2P Output Low Voltage
Tested at 1mA, VPORTP = 57V, For T2P, Must
Complete 2-Event Classification to See Active Low
l
0.15
V
PWRGD, T2P Leakage Current
Pin Voltage Pulled 57V, VPORTP = VPORTN = 0V
l
1
A
PWRGDP Output Low Voltage
Tested at 0.5mA, VPORTP = 52V, VNEG = 4V, Output
Voltage is with Respect to VNEG
l
0.4
V
PWRGDP Clamp Voltage
Tested at 2mA, VNEG = 0V, Voltage is with Respect
to VNEG
l
12.0
16.5
V
PWRGDP Leakage Current
VPWRGD = 11V, VNEG = 0V, Voltage is with Respect
to VNEG
l
1
A
PWM Controller (Note 11)
Operational Input Voltage
IVREF = 0A
l
VIN(OFF)
25
V
VIN Quiescent Current
IVREF = 0A, ISENSE = OC = Open
5.2
6.5
mA
VIN Start-Up Current
FB = 0V, SS_MAXDC = 0V (Notes 12, 13)
l
460
700
A
VIN Shutdown Current
SD_VSEC = 0V (Notes 12, 13)
l
240
350
A
SD_VSEC Threshold
10V < SD < 25V
1.261
1.32
1.379
V
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