LT3505EMS8E#PBF Linear Technology, LT3505EMS8E#PBF Datasheet - Page 5

• Manufacturer Part Number: LT3505EMS8E#PBF
• Description: IC REG SW STP DWN 1.2A 8-MSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT3505EMS8E#PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.78 ~ 33.8 V
• Current - Output: 1.2A
• Frequency - Switching: 200kHz ~ 3MHz
• Voltage - Input: 3.6 ~ 36 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP Exposed Pad, 8-HMSOP, 8-eMSOP
• Dc To Dc Converter Type: Step Down
• Pin Count: 8
• Input Voltage: 36V
• Output Voltage: 0.78 to 33.84V
• Switching Freq: 200 TO 3000KHz
• Output Current: 1.2A
• Package Type: MSOP EP
• Output Type: Adjustable
• Switching Regulator: Yes
• Line Regulation: 0.007%/V(Typ)
• Mounting: Surface Mount
• Input Voltage (min): 3.6V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Compliant

TYPICAL PERFORMANCE CHARACTERISTICS
4.00
3.90
3.80
3.70
3.60
3.50
3.40
3.30
3.20
3.10
3.00
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
5.3
5.1
4.9
4.7
4.3
4.1
3.9
3.7
3.5
5.5
4.5
0
–50
1
0
Undervoltage Lockout
Soft-Start
Typical Minimum Input Voltage,
(V
T
T
TO START
A
A
OUT
TO RUN
= 25°C
0.25
= 25°C
–25
= 3.3V, f
0.50
SHDN PIN VOLTAGE (V)
LOAD CURRENT (mA)
0
TEMPERATURE (°C)
10
0.75
25
SW
1
= 750kHz)
50
1.25
100
75
1.50 1.75
100
3505 G10
1000
125
2
1.60
1.40
1.00
2.40
2.20
2.00
1.80
1.20
0.60
0.80
5.5
5.0
4.5
4.0
3.5
50
45
40
35
30
25
20
15
10
5
0
–50
1
0
Typical Minimum Input Voltage,
(V
Switching Frequency
SHDN Pin Current
T
T
TO START
A
TO RUN
A
OUT
= 25°C
2
= 25°C
–25
= 3.3V, f
4
LOAD CURRENT (mA)
0
TEMPERATURE (°C)
6
10
R
R
8
V
R
25
T
T
SHDN
SW
T
= 30.1k
= 75.0k
= 21k
10
= 2.2MHz)
50
(V)
12 14
100
75
16
100
18
3505 G14
1000
125
20
7.0
6.8
6.6
6.4
6.2
6.0
5.8
5.6
5.4
5.2
5.0
0.3
7.0
6.8
6.6
6.4
6.0
5.6
5.4
5.2
0.6
0.5
0.4
0.1
7.2
6.2
5.8
0.2
0
0
1
1
Frequency Foldback, R
Typical Minimum Input Voltage,
(V
Typical Minimum Input Voltage,
(V
T
TO START
T
TO START
A
A
TO RUN
OUT
TO RUN
OUT
= 25°C
= 25°C
0.1
= 5V, f
= 5V, f
0.2
LOAD CURRENT (mA)
LOAD CURRENT (mA)
10
10
FB VOLTAGE (V)
0.3
SW
SW
0.4
= 750kHz)
= 2.2MHz)
LT3505
0.5
100
100
T
= 75.0k
0.6
T
A
= 25°C
0.7
3505 G15
3505 G12
3505fc
5
1000
1000
0.8