LTC1142HVCG-ADJ Linear Technology, LTC1142HVCG-ADJ Datasheet - Page 2

• Manufacturer Part Number: LTC1142HVCG-ADJ
• Description: IC SW REG STEP-DOWN DUAL 28-SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1142HVCG-ADJ

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 3.3V, 5V
• Current - Output: 50mA
• Frequency - Switching: 250kHz
• Voltage - Input: 3.5 ~ 18 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

PACKAGE/ORDER I FOR ATIO
LTC1142/LTC1142L/LTC1142HV
ABSOLUTE AXI U RATI GS
Input Supply Voltage (Pins 10, 24)
Continuous Output Current (Pins 6, 9, 20, 23) .... 50mA
Sense Voltages (Pins 1, 14, 15, 28)
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
V
I
V
I
2
Consult factory for Industrial and Military grade parts.
2
10
2
OUT
V
, I
, V
, I
OUT
LTC1142, LTC1142L-ADJ ..................... 16V to – 0.3V
LTC1142HV, LTC1142HV-ADJ ............. 20V to – 0.3V
V
V
16
24
16
IN
IN
NDRIVE 3
PDRIVE 5
SENSE
> 13V .............................................. 13V to – 0.3V
< 13V .................................. (V
SENSE
INTV
SHDN3
SGND3
PGND3
V
I
T
C
CC5
TH5
NC
NC
NC
IN5
+
–
T5
JMAX
3
5
PARAMETER
Feedback Voltage
Feedback Current
Regulated Output Voltage
Output Voltage Line Regulation
Output Voltage Load Regulation
Output Ripple (Burst Mode)
Input DC Supply Current (Note 3)
28-LEAD PLASTIC SSOP
10
11
12
13
14
1
2
3
4
5
6
7
8
9
= 125 C,
3.3V Output
5V Output
3.3V Output
5V Output
Normal Mode
Sleep Mode
Shutdown
G PACKAGE
TOP VIEW
W
JA
= 95 C/W
28
27
26
25
24
23
22
21
20
19
18
17
16
15
SENSE
I
INTV
C
V
PDRIVE 3
NC
NC
NDRIVE 5
NC
PGND5
SGND5
SHDN5
SENSE
TH3
T3
IN3
W W
CC3
–
+
3
5
U
IN
+ 0.3V) to – 0.3V
LTC1142CG
LTC1142HVCG
ORDER PART
CONDITIONS
LTC1142HV-ADJ, LTC1142L-ADJ
LTC1142, LTC1142HV
V
Figure 1 Circuit
I
LTC1142
LTC1142HV-ADJ, LTC1142L-ADJ : V
LOAD
W
10,
NUMBER
I
I
5mA < I
5mA < I
4V < V
4V < V
V
LOAD
LOAD
V
SD1
U
24
= 0A
A
= 25 C. V
= 7V to 12V, I
= V
= 700mA, V
= 700mA, V
10
24
LOAD
LOAD
, V
SD2
< 12V, 6V < V
The
24
U
= 2.1V, 4V < V
< 2A
< 2A
< 12V
(Note 1)
10
24
10
denotes the specifications which apply over the full operating
= V
LOAD
= 9V
= 9V
24
Operating Ambient Temperature Range ...... 0 C to 70 C
Extended Commercial
Junction Temperature (Note 2) ............................ 125 C
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
10
= 50mA
= 10V, V
< 12V
Temperature Range ........................... – 40 C to 85 C
10
NDRIVE 1
PDRIVE 2
SENSE
SENSE
INTV
SHDN1
SGND1
PGND1
, V
V
V
I
C
CC2
TH2
T
FB1
IN2
24
NC
NC
+
–
T2
JMAX
1
2
10
< 12V
28-LEAD PLASTIC SSOP
10
11
12
13
14
SHDN
, V
1
2
3
4
5
6
7
8
9
= 125 C,
24
G PACKAGE
TOP VIEW
= 9V
= 0V unless otherwise noted.
JA
= 95 C/W
28
27
26
25
24
23
22
21
20
19
18
17
16
15
SENSE
I
INTV
C
V
PDRIVE 1
NC
NC
NDRIVE 2
PGND2
SGND2
SHDN2
V
SENSE
TH1
T1
IN1
FB2
CC1
–
+
1
2
MIN
1.21
3.23
4.90
– 40
1.25
3.33
5.05
TYP
160
0.2
1.6
LTC1142HVCG-ADJ
LTC1142LCG-ADJ
40
60
50
10
0
ORDER PART
NUMBER
MAX
1.29
3.43
5.20
100
230
2.1
40
65
20
1
UNITS
mV
mV
mV
mV
mA
P-P
V
A
V
V
A
A