lt3505ems8e-trpbf Linear Technology Corporation, lt3505ems8e-trpbf Datasheet - Page 4

• Manufacturer Part Number: lt3505ems8e-trpbf
• Description: 1.2a, Step-down Switching Regulator In 3mm X 3mm Dfn
• Manufacturer: Linear Technology Corporation

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