LTC1143 查看數據表（PDF） - Linear Technology
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LTC1143 Datasheet PDF : 20 Pages
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LTC1143/LTC1143L
LTC1143L-ADJ
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (Pins 5,13) ............... 16V to –0.3V
Continuous Output Current (Pins 4,12) ................ 50mA
Sense Voltages (Pins 1, 8, 9, 16)
VIN ≥ 12.7V .......................................... 13V to – 0.3V
VIN < 12.7V .............................. (VIN + 0.3V) to – 0.3V
Shutdown Voltage
(LTC1143, LTC1143L, Pins 2, 10)...........7V to – 0.3V
VFB Current (LTC1143L-ADJ, Pins 2, 10) ............... 1mA
Operating Temperature Range
Ambient .................................................. 0°C to 70°C
Extended Commercial (Note 4) ........... –40°C to 85°C
Junction Temperature (Note 1) ............................. 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
SENSE+3 1
SHUTDOWN 3 2
GND3 3
P-DRIVE 3 4
VIN5 5
CT5 6
ITH5 7
SENSE–5 8
TOP VIEW
16 SENSE–3
15 ITH3
14 CT3
13 VIN3
12 P-DRIVE 5
11 GND5
10 SHUTDOWN 5
9 SENSE+5
ORDER PART
NUMBER
LTC1143CS
LTC1143LCS
S PACKAGE
16-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 95°C/W
Consult factory for Industrial and Military grade parts.
SENSE+1 1
VFB1 2
GND1 3
P-DRIVE 1 4
VIN2 5
CT2 6
ITH2 7
SENSE–2 8
TOP VIEW
16 SENSE–1
15 ITH1
14 CT1
13 VIN1
12 P-DRIVE 2
11 GND2
10 VFB2
9 SENSE+2
S PACKAGE
16-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 95°C/W
ORDER PART
NUMBER
LTC1143LCS-ADJ
ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 10V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
V2, V10 Feedback Voltage (LTC1143L-ADJ)
VIN = 9V
q 1.21
I2, I10 Feedback Current (LTC1143L-ADJ)
q
VOUT Regulated Output Voltage (LTC1143/LTC1143L) VIN3, VIN5 = 9V, V2 = V10 = 0V
3.3V Output
ILOAD = 700mA
5V Output
ILOAD = 700mA
q 3.23
q 4.90
∆VOUT Output Voltage Line Regulation
VIN = 7V to 12V, ILOAD = 50mA
–40
Output Voltage Load Regulation
LTC1143/LTC1143L
V2 = V10 = 0V
3.3V Output
5V Output
5mA < ILOAD < 2.0A
q
5mA < ILOAD < 2.0A
q
Output Ripple (Burst Mode)
ILOAD = 0A
I5, I13
Input DC Supply Current (Note 2)
LTC1143:
Normal Mode
Sleep Mode
Shutdown
LTC1143L: Normal Mode
Sleep Mode
Shutdown
LTC1143L-ADJ: Normal Mode
Sleep Mode
V2 = V10 = 0V, 4V < VIN < 12V
V2 = V10 = 0V, 4V < VIN3 < 12V, 6V < VIN5 < 12V
V2 = V10 = 2.1V, 4V < VIN < 12V
V2 = V10 = 0V, 3.5V < VIN < 12V
V2 = V10 = 0V, 3.5V < VIN3 < 12V, 6V < VIN5 < 12V
V2 = V10 = 2.1V, 3.5V < VIN < 12V
3.5V < VIN < 12V
3.5V < VIN < 12V, VOUT ≤ 3.3V
TYP MAX UNITS
1.25 1.29
V
0.2 1
µA
3.33 3.43
V
5.05 5.20
V
0
40
mV
40 65
mV
60 100
mV
50
mVP-P
1.6 2.1
mA
160 230
µA
10 20
µA
1.6 2.1
mA
160 230
µA
10 20
µA
1.6 2.1
mA
160 230
µA
2
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