LTC1142 데이터 시트보기 (PDF) - Linear Technology
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LTC1142 Datasheet PDF : 20 Pages
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LTC1142/LTC1142L/LTC1142HV
ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage (Pins 10, 24)
LTC1142, LTC1142L-ADJ ..................... 16V to – 0.3V
LTC1142HV, LTC1142HV-ADJ ............. 20V to – 0.3V
Continuous Output Current (Pins 6, 9, 20, 23) .... 50mA
Sense Voltages (Pins 1, 14, 15, 28)
VIN > 13V .............................................. 13V to – 0.3V
VIN < 13V .................................. (VIN + 0.3V) to – 0.3V
Operating Ambient Temperature Range ...... 0°C to 70°C
Extended Commercial
Temperature Range ........................... – 40°C to 85°C
Junction Temperature (Note 2) ............................ 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
SENSE +3 1
SHDN3 2
SGND3 3
PGND3 4
NC 5
NDRIVE 3 6
NC 7
NC 8
PDRIVE 5 9
VIN5 10
CT5 11
INTVCC5 12
ITH5 13
SENSE –5 14
TOP VIEW
28 SENSE –3
27 ITH3
26 INTVCC3
25 CT3
24 VIN3
23 PDRIVE 3
22 NC
21 NC
20 NDRIVE 5
19 NC
18 PGND5
17 SGND5
16 SHDN5
15 SENSE +5
ORDER PART
NUMBER
LTC1142CG
LTC1142HVCG
G PACKAGE
28-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 95°C/W
Consult factory for Industrial and Military grade parts.
SENSE+1 1
VFB1 2
SHDN1 3
SGND1 4
PGND1 5
NDRIVE 1 6
NC 7
NC 8
PDRIVE 2 9
VIN2 10
CT2 11
INTVCC2 12
ITH2 13
SENSE –2 14
TOP VIEW
28 SENSE –1
27 ITH1
26 INTVCC1
25 CT1
24 VIN1
23 PDRIVE 1
22 NC
21 NC
20 NDRIVE 2
19 PGND2
18 SGND2
17 SHDN2
16 VFB2
15 SENSE +2
G PACKAGE
28-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 95°C/W
ORDER PART
NUMBER
LTC1142HVCG-ADJ
LTC1142LCG-ADJ
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. V10 = V24 = 10V, VSHDN = 0V unless otherwise noted.
SYMBOL
V2, V16
I2, I16
VOUT
∆VOUT
I10, I24
PARAMETER
Feedback Voltage
Feedback Current
Regulated Output Voltage
3.3V Output
5V Output
Output Voltage Line Regulation
Output Voltage Load Regulation
3.3V Output
5V Output
Output Ripple (Burst Mode)
Input DC Supply Current (Note 3)
Normal Mode
Sleep Mode
Shutdown
CONDITIONS
LTC1142HV-ADJ, LTC1142L-ADJ : V10, V24 = 9V q
LTC1142HV-ADJ, LTC1142L-ADJ
q
LTC1142, LTC1142HV
ILOAD = 700mA, V24 = 9V
q
ILOAD = 700mA, V10 = 9V
q
V10, V24 = 7V to 12V, ILOAD = 50mA
Figure 1 Circuit
5mA < ILOAD < 2A
q
5mA < ILOAD < 2A
q
ILOAD = 0A
LTC1142
4V < V10, V24 < 12V
4V < V24 < 12V, 6V < V10 < 12V
VSD1 = VSD2 = 2.1V, 4V < V10, V24 < 12V
MIN TYP MAX
1.21 1.25 1.29
0.2
1
3.23 3.33 3.43
4.90 5.05 5.20
– 40
0
40
40
65
60
100
50
1.6
2.1
160
230
10
20
UNITS
V
µA
V
V
mV
mV
mV
mVP-P
mA
µA
µA
2
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