LT1121CS8-5#PBF Linear Technology, LT1121CS8-5#PBF Datasheet - Page 16

• Manufacturer Part Number: LT1121CS8-5#PBF
• Description: IC REG LDO 5V 150MA 8-SOIC
• Manufacturer: Linear Technology

Specifications of LT1121CS8-5#PBF

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 30V
• Voltage - Dropout (typical): 0.42V @ 150mA
• Number Of Regulators: 1
• Current - Output: 150mA
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Primary Input Voltage: 30V
• Output Voltage Fixed: 5V
• Dropout Voltage Vdo: 420mV
• No. Of Pins: 8
• Output Current: 150mA
• Operating Temperature Range: 0°C To +125°C
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -

APPLICATIO S I FOR ATIO
LTC1608
A
A
16
IN
IN
J3
J4
+
–
GND
E4
E5
3V
E1
5V
R17
10k
R16
10k
50
2.2 F
C11
R7
50
R10
+
1 F
V
C9
E3
REF
10
C10 22 F
R6
C13
22 F
A
A
10pF
10pF
C14
1000pF
C17
C18
5V
IN
IN
C19
1000pF
+
–
JP1
U
10
11
12
13
14
15
16
17
18
3
2
R15
100
6
5
1
2
3
4
5
6
7
8
9
+
–
–
+
A
A
V
REFCOMP
AGND
AGND
AGND
AGND
DV
DGND
D15
D14
D13
D12
D11
D10
D9
D8
+
LT1469
LT1469
IN
IN
REF
U
U4A
U4B
U1 LTC1608
DD
+
–
C16 10pF
R8 402
5V
C12
22 F
8
4
0.1 F
C21
OV
AV
AV
OGND
–5V
SHDN
CONV
OV
BUSY
C15 10pF
Figure 17a. LTC1608 Suggested Evaluation Circuit Schematic
DD
DD1
DD2
V
RD
CS
D0
D1
D2
D3
D4
D5
D6
D7
402
DD
1
7
SS
R9
0.1 F
W
C20
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
–5V
5V
E2
100pF
C22
100pF
50
50
R11
R12
C27
C5 1 F
R3
10
C4 1 F
1 F
U
+
C7
50
50
R13
R14
1 F
C28
22 F
C6
C24
100pF
GND 5V
E6
C25
100pF
C23
100pF
OV
R5
10k
DD
C26
1000pF
A
(U1-1)
A
(U1-2)
IN
IN
JP3
+
–
TC7SH08FUTE85L
OV
R4 10k
DD
U5
U2 MC74HC574ADT
10
10
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
U3 74HC574
OE
D0
D1
D2
D3
D4
D5
D6
D7
GND
OE
D0
D1
D2
D3
D4
D5
D6
D7
GND
0.1 F
C8
OV
CLK
DD
CLK
V
C3 0.1 F
V
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
CC
CC
10k
R2
20
19
18
17
16
15
14
13
12
11
20
19
18
17
16
15
14
13
12
11
51k
R1
OV
DD
0.1 F
C1
J2
CONVERT
START
JP2
E7
GND
TC7SH04F
U6
OV
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
CONN20
1
3
5
7
9
DD
J1
LSB
CLK
MSB