參數(shù)資料
型號： LTC4224CDDB-1#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10
封裝： 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-10
文件頁數(shù)： 10/16頁
文件大?。?/td> 215K
代理商： LTC4224CDDB-1#PBF
LTC4224-1/LTC4224-2
3
422412fa
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to GND unless otherwise
specied.
The
l denotes the specications which apply over the full operating
temperature range. TA = 25°C, VCC1 = 5V, VCC2 = 3.3V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supplies
VCC
VCC Supply Range
VCC = Max (VCC1, VCC2)
l
2.7
6
V
ICC
VCC Supply Current
l
1.4
3
mA
VCC(UVL)
VCC Undervoltage Lockout
VCC Rising
l
2.2
2.4
2.65
V
VCCLO
VCCLO Supply Range
VCCLO = Min (VCC1, VCC2),
VCC ≥ 2.7V
l
16
V
ICCLO
VCCLO Supply Current
l
40
100
μA
VCCLO(UVL)
VCCLO Undervoltage Lockout
VCCLO Falling
l
0.76
0.8
0.84
V
External Gate Drive
ΔVGATE
Gate Drive
(VGATEn – VCC)
IGATEn = 0μA, –1μA
l
4.5
5.5
7
V
IGATE(UP)
Gate Pull-Up Current
Gate Drive On, VGATEn = 1V
l
–7
–10
–13
μA
IGATE(DN)
Gate Pull-Down Current
VONn = 1V, VGATEn = 10V
l
0.5
1.5
3
mA
IGATE(FPD)
Gate Fast Pull-Down Current
Fast Turn-Off, VGATEn = 10V
l
50
125
200
mA
Current Limit
ΔVSENSE(CB)
Circuit Breaker Trip Sense Voltage
(VCCn – SENSEn)
l
22.5
25
27.5
mV
ISENSE
SENSE Input Current
VSENSE1 = 5V, VSENSE2 = 3.3V
l
40
100
μA
Inputs and Outputs
VON(TH)
ONn Threshold Voltage
VONn Rising
l
0.76
0.8
0.84
V
ΔVON(HYST)
ONn Hysteresis
l
15
30
50
mV
ION(IN)
ONn Pull-Up Current
VONn = 1V
l
–5
–10
–15
μA
VOL
Output Low Voltage (FAULT)IFAULT = 3mA
l
0.2
0.4
V
Delay
tCB
Circuit Breaker Delay
l
2.5
5
7.5
ms
tPHL(SENSE)
Sense Voltage, (VCCn – SENSEn) High to
GATE Low
ΔVSENSE = 200mV, CGATE = 10nF l
0.4
1
μs
tPLH(GATE)
ONn Low or Input Supply High to GATEn
High Prop Delay
l
510
15
ms
tPLH(UVL)
VCCn Low to GATEn Low Prop Delay
l
816
μs
tD(UV)
UV Turn-On Delay
VCC Out of UV
l
80
160
240
ms
tD(COOL)
Auto-Retry Cooling Delay
Note 3
l
24
6
s
tBLANK
Start-Up Circuit Breaker Blanking Delay
l
2.5
5
7.5
ms
Note 3: LTC4224-2 only.
Note 4: The greater of VCC1 and VCC2 is the internal supply voltage (VCC).
An internal clamp limits the GATE pin to a minimum 5V above VCC. Driving
this pin beyond the clamp may damage the device.
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