LT3505EMS8E#PBF Linear Technology, LT3505EMS8E#PBF Datasheet - Page 4

• 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

LT3505
TYPICAL PERFORMANCE CHARACTERISTICS
4
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
95
90
85
80
75
70
65
60
55
50
95
90
85
80
75
70
65
60
55
50
5
0
0
Max Load Current (V
L = 2.2µH, f
Effi ciency (V
f
Effi ciency (V
f
SW
SW
T
T
T
A
A
A
= 25°C
= 25°C
= 25°C
= 750kHz)
= 2.2MHz)
6
0.2
0.2
*10% DROPOUT
7
INPUT VOLTAGE (V)
LOAD CURRENT (A)
LOAD CURRENT (A)
TYPICAL
0.4
0.4
SW
OUT
OUT
8
= 2.2MHz)
0.6
0.6
= 5V, L = 10µH,
= 5V, L = 4.7µH,
MINIMUM
9
OUT
0.8
0.8
10
= 3.3V,
V
V
V
V
V
IN
IN
IN
1.0
IN
IN
1.0
11
= 8V
= 12V
= 24V
= 8V
= 12V
3505 G07
12
1.2
1.2
1.80
1.70
1.60
1.50
1.40
1.30
1.20
1.10
1.00
0.80
0.90
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
95
90
85
80
75
70
65
60
55
50
0
5
7
Effi ciency (V
f
Max Load Current (V
L = 6.8µH, f
Max Load Current (V
L = 3.3µH, f
SW
T
T
T
A
A
A
= 25°C
= 25°C
= 25°C
8
= 750kHz)
7
0.2
TYPICAL
9
9
LOAD CURRENT (A)
INPUT VOLTAGE (V)
*10% DROPOUT
INPUT VOLTAGE (V)
0.4
*10% DROPOUT
SW
SW
10
OUT
11
MINIMUM
= 750kHz)
TYPICAL
= 2.2MHz)
0.6
11
= 3.3V, L = 10µH,
13
OUT
OUT
12
0.8
15
MINIMUM
= 3.3V,
= 5V,
14
V
V
V
17
IN
IN
IN
1.0
16
= 8V
= 12V
= 24V
3505 G05
3505 G08
19
1.2
18
500
450
400
350
300
250
200
150
100
1.3
1.2
1.0
1.7
1.6
1.5
1.4
1.1
0.8
0.9
50
95
90
85
80
75
70
65
60
55
50
0
0
Switch Voltage Drop
0
6
Effi ciency (V
L = 4.7µH, f
Max Load Current (V
f
SW
T
T
A
A
8
= 25°C
= 25°C
= 750kHz)
0.2
10
300
12
T
SWITCH CURRENT (mA)
A
LOAD CURRENT (A)
INPUT VOLTAGE (V)
= 25°C
0.4
TYPICAL, L = 22µH
14
*10% DROPOUT
600
SW
OUT
16
T
A
= 2.2MHz)
= 85°C
0.6
18
= 3.3V,
MINIMUM, L = 10µH
T
TYPICAL, L = 10µH
900
A
20
= –45°C
OUT
0.8
22
= 5V,
24
1200
V
V
IN
IN
1.0
26
= 8V
= 12V
3505 G06
3505 G09
28
3505fc
1500
1.2
30