LTC3409 LINER [Linear Technology], LTC3409 Datasheet - Page 5

• Manufacturer Part Number: LTC3409
• Description: 600mA Low Vin Buck Regulator in 3mm x 3mm DFN
• Manufacturer: LINER [Linear Technology]

(From Typical Application on the front page except for the resistive divider resistor values)
TYPICAL PERFOR A CE CHARACTERISTICS
0.250
0.200
0.100
2.70
2.60
2.50
2.40
2.30
2.20
2.10
2.00
1.90
1.80
1.70
1.60
1.50
1.40
1.30
1.20
0.450
0.400
0.350
0.300
0.150
0.050
500
450
400
350
300
250
200
150
100
50
0
–50
–50
0
Oscillator Frequency
vs Temperature
Dynamic Supply Current vs
Temperature, V
V
1.5
OUT
R
DS(ON)
–25
–25
= 1.5V, 0 Load
V
IN
2.5
PULSE SKIP
V
V
= 2.7V
0
IN
IN
0
vs Input Voltage
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT VOLTAGE (V)
= 4.2V
= 1.6V
BURST
V
25
IN
25
SYNCHRONOUS
IN
= 4.2V
3.5
SWITCH
SWITCH
= 3.6V,
50
V
50
MAIN
IN
V
= 2.7V
IN
75
OSC 1.7MHz
75
4.5
= 1.6V
OSC 2.6MHz
W
100
100
3409 G07
3409 G13
3409 G10
5.5
U
125
125
0.55
0.50
0.35
0.15
0.10
0.45
0.40
0.30
0.25
0.20
6000
5000
2000
4000
3000
1000
–10
–50
–2
–4
–6
–8
R
6
4
2
0
0
–50
1.5
DS(ON)
Oscillator Frequency Shift
vs Input Voltage
Switch Leakage vs Temperature
V
–25
V
IN
IN
–25
= 5.5V
= 5.5V
vs Input Temperature
0
2.5
TEMPERATURE (°C)
SYNCHRONOUS SWITCH
0
1.7MHz
2.6MHz
INPUT VOLTAGE (V)
TEMPERATURE (°C)
f
f
HIGH
LOW
25
MAIN SWITCH
2.7V
SYNCHRONOUS SWITCH
25
50
3.5
1.6V
2.7V
4.2V
50
MAIN SWITCH
75
4.2V
75
4.5
100
1.6V
3409 G11
100
3409 G08
3409 G14
125
125
5.5
4000
2000
6000
5000
3000
1000
0
1.5
Dynamic Supply Current
vs Input Voltage
1.21
1.19
1.18
1.22
1.20
PULSE
30
20
45
40
35
25
15
10
SKIP
0
5
2
0
0
Output Voltage vs Load Current
V
Switch Leakage vs Input Voltage
IN
2.5
100 200 300 400
= 1.6V
V
I
INPUT VOLTAGE (V)
OUT
OUT
SYNCHRONOUS
3
V
2
= 0
LOAD CURRENT (mA)
FB
SWITCH
= 1.5V
3.5
INPUT VOLTAGE (V)
= 0
V
OUT
MAIN SWITCH
I
OUT
4
= 1.5V
1.2V
1.2V
BURST
PULSE
= 0
4
BURST/SLEEP
SKIP
4.5
500 600 700 800 900
LTC3409
OUT
OUT
V
5
FB
= V
5.5
3409 G12
6
IN
6
3409 G15
3409 G09
120
100
80
60
40
0
20
5
3409f
8