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LTC2923IDE Arkusz danych(PDF) 2 Page - Linear Technology

Numer części LTC2923IDE
Szczegółowy opis  Power Supply Tracking Controller
PDF  20 Pages
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Producent  LINER [Linear Technology]
Strona internetowa  http://www.linear.com
Logo LINER - Linear Technology

LTC2923IDE Arkusz danych(HTML) 2 Page - Linear Technology

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LTC2923
2
2923fa
Supply Voltage (VCC) ................................ –0.3V to 10V
Input Voltages
ON ........................................................ – 0.3V to 10V
TRACK1, TRACK2 ...................... – 0.3V to VCC + 0.3V
RAMP ........................................... – 0.3V to VCC + 1V
Output Voltages
FB1, FB2, SDO, STATUS ........................ – 0.3V to 10V
RAMPBUF ................................. – 0.3V to VCC + 0.3V
GATE (Note 2) ................................... – 0.3V to 11.5V
(Note 1)
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
MS PART
MARKING
LTAED
LTAEE
ORDER PART
NUMBER
TJMAX = 125°C, θJA = 120°C/W
1
2
3
4
5
VCC
ON
TRACK1
TRACK2
RAMPBUF
10
9
8
7
6
RAMP
GATE
FB1
FB2
GND
TOP VIEW
MS PACKAGE
10-LEAD PLASTIC MSOP
Average Current
TRACK1, TRACK2 .............................................. 5mA
FB1, FB2 ............................................................ 5mA
RAMPBUF ......................................................... 5mA
Operating Temperature Range
LTC2923C ............................................... 0°C to 70°C
LTC2923I ............................................ – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MS Package .................................................... 300°C
DE PART
MARKING
2923
ORDER PART
NUMBER
LTC2923CDE
LTC2923IDE
12
11
10
9
8
7
1
2
3
4
5
6
RAMP
GATE
STATUS
SDO
FB1
FB2
VCC
ON
TRACK1
TRACK2
RAMPBUF
GND
TOP VIEW
13
DE12 PACKAGE
12-LEAD (4mm × 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 43°C/W
EXPOSED PAD (PIN 13) INTERNALLY CONNECTED TO GND
(PCB CONNECTION OPTIONAL)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC
Input Supply Range
●
2.9
5.5
V
ICC
Input Supply Current
IFBx = 0, ITRACKx = 0
●
1.3
3
mA
IFBx = –1mA, ITRACKx = –1mA,
●
57
10
mA
IRAMPBUF = –2mA
VCC(UVL)
Input Supply Undervoltage Lockout
VCC Rising
●
2.2
2.5
2.7
V
∆VCC(UVLHYST) Input Supply Undervoltage Lockout Hysteresis
25
mV
∆VGATE
External N-Channel Gate Drive (VGATE – VCC)IGATE = –1µA
●
5
5.5
6
V
IGATE
GATE Pin Current
Gate On, VGATE = 0V, No Faults
●
–7
–10
–13
µA
Gate Off, VGATE = 5V, No Faults
●
7
10
13
µA
Gate Off, VGATE = 5V,
●
5
20
50
mA
Short-Circuit Fault
VON(TH)
ON Pin Threshold Voltage
VON Rising
●
1.212
1.230
1.248
V
∆VON(HYST)
ON Pin Hysteresis
●
30
75
150
mV
The
● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. 2.9V < VCC < 5.5V unless otherwise noted (Note 3).
ELECTRICAL CHARACTERISTICS
LTC2923CMS
LTC2923IMS



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