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LTC3809EMSE-1#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LTC3809-1
4
38091fc
TYPICAL PERFORMANCE CHARACTERISTICS
LOAD CURRENT (mA)
EFFICIENCY (%)
100
90
80
70
95
85
75
65
60
1 100 1k 10k
38091 G01
10
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.8V
V
OUT
= 1.2V
FIGURE 8 CIRCUIT
MODE = V
IN
V
IN
= 5V
LOAD CURRENT (mA)
EFFICIENCY (%)
100
90
80
70
95
85
75
65
50
55
60
38091 G02
1 100 1k 10k10
FIGURE 8 CIRCUIT
V
IN
= 5V, V
OUT
= 2.5V
FORCED
CONTINUOUS
(MODE = 0V)
PULSE SKIPPING
(MODE = 0.6V)
BURST MODE
(MODE = V
IN
)
I
TH
VOLTAGE (V)
0.5
–20
CURRENT LIMIT (%)
0
20
40
60
100
1 1.5
38091 G03
2
80
Burst Mode OPERATION
(I
TH
RISING)
Burst Mode OPERATION
(I
TH
FALLING)
FORCED CONTINUOUS
MODE
PULSE SKIPPING
MODE
V
OUT
200mV/DIV
AC COUPLED
I
L
2A/DIV
100μs/DIV
V
IN
= 3.3V
V
OUT
= 1.8V
I
LOAD
= 300mA TO 3A
MODE = V
IN
FIGURE 8 CIRCUIT
38091 G04
V
OUT
200mV/DIV
AC COUPLED
I
L
2A/DIV
100μs/DIV
V
IN
= 3.3V
V
OUT
= 1.8V
I
LOAD
= 300mA TO 3A
MODE = 0V
FIGURE 8 CIRCUIT
38091 G05
V
OUT
200mV/DIV
AC COUPLED
I
L
2A/DIV
100μs/DIV
V
IN
= 3.3V
V
OUT
= 1.8V
I
LOAD
= 300mA TO 3A
MODE = V
FB
FIGURE 8 CIRCUIT
38091 G06
V
OUT
1.8V
500mV/DIV
200μs/DIV
V
IN
= 4.2V
R
LOAD
= 1
FIGURE 8 CIRCUIT
38091 G07
V
OUT
1.8V
500mV/DIV
1ms/DIV
V
IN
= 4.2V
R
LOAD
= 1
FIGURE 8 CIRCUIT
38091 G08
Load Step
(Burst Mode Operation)
Load Step
(Forced Continuous Mode)
Load Step
(Pulse-Skipping Mode)
Start-Up with Internal Soft-Start
(TRACK/SS = V
IN
)
Start-Up with External Soft-Start
(C
SS
= 10nF)
Effi ciency vs Load Current Effi ciency vs Load Current
Maximum Current Sense Voltage
vs I
TH
Pin Voltage
T
A
= 25°C, unless otherwise noted.
LTC3809-1
5
38091fc
V
OUT
1.8V
V
x
2.5V
500mV/DIV
10ms/DIV
V
IN
= 4.2V
R
TA
= 590
R
TB
= 1.18k
FIGURE 8 CIRCUIT
38091 G09
V
OUT
1.8V
V
x
2.5V
500mV/DIV
10ms/DIV
V
IN
= 4.2V
R
TA
= 590
R
TB
= 1.18k
FIGURE 8 CIRCUIT
38091 G10
V
OUT
1.8V
V
x
2.5V
500mV/DIV
10ms/DIV
V
IN
= 4.2V
R
TA
= 590
R
TB
= 1.69k
FIGURE 8 CIRCUIT
38091 G11
TEMPERATURE (°C)
–60
0.594
FEEDBACK VOLTAGE (V)
0.596
0.598
0.600
0.602
–20 20
60
100
38091 G012
0.604
0.606
–40 0
40
80
TEMPERATURE (°C)
–60
2.15
2.20
2.25
INPUT VOLTAGE (V)
2.30
2.35
2.40
2.45
–20 20
60
100
38091 G13
2.50
2.55
–40 0
40
80
V
IN
RISING
V
IN
FALLING
TEMPERATURE (°C)
–60
1.00
RUN VOLTAGE (V)
1.05
–20 20
60
100
38091 G14
1.15
1.10
1.20
–40 0
40
80
TEMPER
–60
115
MAXIMUM CURRENT SENSE THRESHOLD (mV)
120
125
130
–20 20
60
100
38091 G15
ATURE (°C)
135
–40 0
40
80
IPRG = FLOAT
TEMPERATURE (°C)
–60
0.94
TRACK/SS START-UP CURRENT (μA)
–20 20
60
100
38091 G16
0.96
0.98
1.04
1.02
1.00
–40 0
40
80
TRACK/SS = 0V
Regulated Feedback Voltage
vs Temperature
Undervoltage Lockout Threshold
vs Temperature
Shutdown (RUN) Threshold
vs Temperature
Maximum Current Sense
Threshold vs Temperature
TRACK/SS Start-Up Current
vs Temperature
Start-Up with Coincident Tracking
(V
OUT
= 0V at 0s)
Start-Up with Coincident Tracking
(V
OUT
= 0.8V at 0s)
Start-Up with Ratiometric Tracking
(V
OUT
= 0V at 0s)
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, unless otherwise noted.
LTC3809-1
6
38091fc
TEMPERATURE (°C)
–60
–10
–8
–6
NORMALIZED FREQUENCY (%)
–4
–2
0
4
–20 20
60
100
38091 G17
8
2
6
10
–40 0
40
80
INPUT VOLTAGE (V)
2
–5
–4
–3
NORMALIZED FREQUENCY SHIFT (%)
–2
–1
0
2
46
8
10
38091 G18
4
1
3
5
35
7
9
INPUT VOLTAGE (V)
2
0
2
SHUTDOWN CURRENT (μA)
4
6
8
12
46
8
10
38091 G19
16
10
14
18
35
7
9
INPUT VOLTAGE (V)
2
70
SLEEP CURRENT (μA)
80
100
46
8
10
38091 G20
120
90
110
130
35
7
9
TRACK/SS VOLTAGE (V)
0
0.84
1.00
TRACK/SS STARTUP CURRENT (μA)
0.88
0.2 0.4
0.6
0.7
38091 G21
0.92
0.96
1.04
0.1 0.3
0.5
Oscillator Frequency
vs Temperature
Oscillator Frequency
vs Input Voltage
Shutdown Quiescent Current
vs Input Voltage
Sleep Current vs Input Voltage
TRACK/SS Start-Up Current
vs TRACK/SS Voltage
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, unless otherwise noted.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

LTC3809EMSE-1#PBF

Mfr. #:
Buy LTC3809EMSE-1#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators No Rsense, Low EMI DC/DC Controller in MSE
Lifecycle:
New from this manufacturer.
Delivery:
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