OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LTC3417EDHC#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC3417
4
3417fd
TYPICAL PERFORMANCE CHARACTERISTICS
OUT1 Burst Mode Operation
OUT1 Pulse Skipping
Mode Operation
OUT1 Forced Continuous
Mode Operation
OUT2 Burst Mode Operation
OUT2 Pulse Skipping
Mode Operation
OUT2 Forced Continuous
Mode Operation
OUT1 Effi ciency vs Load Current OUT2 Effi ciency vs Load Current
OUT1 Effi ciency vs V
IN
(Burst Mode Operation)
3417 G01
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 100mA
REFER TO FIGURE 4
I
L
250mA/DIV
V
OUT
20mV/DIV
2µs/DIV
3417 G02
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 100mA
REFER TO FIGURE 4
I
L
250mA/DIV
V
OUT
20mV/DIV
2µs/DIV
3417 G03
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 100mA
REFER TO FIGURE 4
I
L
250mA/DIV
V
OUT
20mV/DIV
2µs/DIV
3417 G04
V
IN
= 3.6V
V
OUT
= 2.5V
I
LOAD
= 60mA
REFER TO FIGURE 4
I
L
250mA/DIV
V
OUT
20mV/DIV
2µs/DIV
3417 G05
V
IN
= 3.6V
V
OUT
= 2.5V
I
LOAD
= 60mA
REFER TO FIGURE 4
I
L
250mA/DIV
V
OUT
20mV/DIV
2µs/DIV
3417 G06
V
IN
= 3.6V
V
OUT
= 2.5V
I
LOAD
= 60mA
REFER TO FIGURE 4
I
L
250mA/DIV
V
OUT
20mV/DIV
2µs/DIV
LOAD CURRENT (A)
70
EFFICIENCY (%)
80
85
95
100
0.001 0.1 1 10
3417 G07
60
0.01
90
75
65
V
IN
= 2.5V
V
OUT
= 1.8V
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
REFER TO FIGURE 4
LOAD CURRENT (A)
0.001
80
EFFICIENCY (%)
90
100
0.01 0.1 1
3417 G08
70
75
85
95
65
60
V
IN
= 3.6V
V
OUT
= 2.5V
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
REFER TO FIGURE 4
V
IN
(V)
2 2.5 3.5 4.5 5.5
EFFICIENCY (%)
90
95
100
3417 G09
85
80
3
45
75
70
V
OUT
= 1.8V
I
LOAD
= 1.4A
I
LOAD
= 460mA
REFER TO FIGURE 4
LTC3417
5
3417fd
TYPICAL PERFORMANCE CHARACTERISTICS
OUT2 Effi ciency vs V
IN
(Pulse Skipping Mode) Load Step OUT1 Load Step OUT2
Effi ciency vs Frequency OUT1 Effi ciency vs Frequency OUT2 R
DS(ON)
vs V
IN
OUT1
R
DS(ON)
vs V
IN
OUT2 Frequency vs V
IN
Frequency vs Temperature
V
IN
(V)
2 2.5
EFFICIENCY (%)
90
95
100
3417 G10
85
80
3 3.5
4 4.5 5 5.5
75
70
V
OUT
= 2.5V
REFER TO FIGURE 4
I
LOAD
= 800mA
I
LOAD
= 250mA
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 0.25A to 1.4A
REFER TO FIGURE 4
I
OUT1
500mA/DIV
V
OUT1
100mV/DIV
3417 G11
100µs/DIV
V
IN
= 3.6V
V
OUT
= 2.5V
I
LOAD
= 0.25A to 0.8A
REFER TO FIGURE 4
I
OUT2
500mA/DIV
V
OUT2
100mV/DIV
3417 G12
100µs/DIV
FREQUENCY (MHz)
0
82
EFFICIENCY (%)
84
86
88
90
92
94
1234
3417 G13
5
T
A
= 27°C
V
IN
= 3.6V
V
OUT
= 1.8V
I
OUT
= 300mA
FREQUENCY (MHz)
0
60
EFFICIENCY (%)
65
70
75
80
85
90
12 34
3417 G14
T
A
= 27°C
V
IN
= 3.6V
V
OUT
= 2.5V
I
OUT
= 100mA
V
IN
(V)
2 2.5
0.080
R
DS(ON)
(Ω)
0.090
0.105
3
4
4.5
3417 G15
0.085
0.100
0.095
3.5
5
5.5
T
A =
27°C
P-CHANNEL SWITCH
N-CHANNEL SWITCH
V
IN
(V)
2
R
DS(ON)
(Ω)
0.18
0.19
0.20
3.5 4.5
3417 G16
0.17
0.16
2.5 3
4 5 5.5
0.15
0.14
T
A
= 27°C
P-CHANNEL SWITCH
N-CHANNEL SWITCH
V
IN
(V)
2
FREQUENCY VARIATION (%)
0
2
4
5 5.5
3417 G17
–4
–10
2.5 3
3.5
4 4.5
6
–2
–6
–8
FREQ = 143k TO GROUND
FREQ = V
IN
TEMPERATURE (°C)
–50
FREQUENCY VARIATION (%)
5
10
15
25 75
3417 G18
0
–5
–25 0
50 100 125
–10
–15
FREQ = 143k TO GROUND
FREQ = V
IN
LTC3417
6
3417fd
PIN FUNCTIONS
RUN1 (Pin 1/Pin 2): Enable for 1.4A Regulator. When
at Logic 1, 1.4A regulator is running. When at 0V, 1.4A
regulator is off. When both RUN1 and RUN2 are at 0V, the
part is in shutdown.
V
IN1
(Pin 2/Pin 3): Supply Pin for P-channel Switch of
1.4A Regulator.
I
TH1
(Pin 3/Pin 4): Error Amplifi er Compensation Point
for 1.4A Regulator. The current comparator threshold
increases with this control voltage. Nominal voltage range
for this pin is 0V to 1.5V.
V
FB1
(Pin 4/Pin 5): Receives the feedback voltage from
external resistive divider across the 1.4A regulator output.
Nominal voltage for this pin is 0.8V.
V
FB2
(Pin 5/Pin 6): Receives the feedback voltage from
external resistive divider across the 800mA regulator
output. Nominal voltage for this pin is 0.8V.
I
TH2
(Pin 6/Pin 7): Error Amplifi er Compensation Point
for 800mA regulator. The current comparator threshold
increases with this control voltage. Nominal voltage range
for this pin is 0V to 1.5V.
RUN2 (Pin 7/Pin 8): Enable for 800mA Regulator. When at
Logic 1, 800mA regulator is running. When at 0V, 800mA
regulator is off. When both RUN1 and RUN2 are at 0V, the
part is in shutdown.
V
IN2
(Pin 8/Pin 9): Supply Pin for P-channel Switch of
800mA Regulator and Supply for Analog Circuitry.
MODE (Pin 9/Pin 12): Mode Selection Pin. This pin
controls the operation of the device. When the voltage
on the MODE pin is >(V
IN
– 0.5V), Burst Mode operation
is selected. When the voltage on the MODE pin is <0.5V,
pulse skipping mode is selected. When the MODE pin is
held at V
IN
/2, forced continuous mode is selected.
SW2 (Pin 10/Pin 13): Switch Node Connection to the
Inductor for the 800mA Regulator. This pin swings from
V
IN2
to PGND2.
PGOOD (Pin 11/Pin 14): Power Good Pin. This common
drain-logic output is pulled to GND when the output voltage
of either regulator is –6% of regulation. If either RUN1 or
RUN2 is low (the respective regulator is in sleep mode and
therefore the output voltage is low), then PGOOD refl ects
the regulation of the running regulator.
FREQ (Pin 12/Pin 15): Frequency Set Pin. When FREQ is
at V
IN
, internal oscillator runs at 1.5MHz. When a resistor
is connected from this pin to ground, the internal oscillator
frequency can be varied from 0.6MHz to 4MHz.
GNDA (Pin 13/Pin 16): Analog Ground Pin for Internal
Analog Circuitry.
PHASE (Pin 14/Pin 17): Selects 800mA regulator switching
phase with respect to 1.4A regulator switching. Set to V
IN
,
the 1.4A regulator and the 800mA regulator are in phase.
When PHASE is at 0V, the 1.4A regulator and the 800mA
regulator are switching 180 degrees out-of-phase.
SW1 (Pin 15/Pin 18): Switch Node Connection to the
Inductor for the 1.4A Regulator. This pin swings from
V
IN1
to PGND1.
PGND1 (Pin 16/Pin 19): Ground for SW1 N-channel
Driver.
PGND2, GNDD (Pins 1,10,11,20): TSSOP Package Only.
Ground for SW2 N-channel driver and digital ground for
circuit.
Exposed Pad (Pin 17/Pin 21): PGND2, GNDD. Ground for
SW2 N-channel driver and digital ground for circuit. The
Exposed Pad must be soldered to PCB ground.
(DFN/TSOP)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC3417EDHC#TRPBF

Mfr. #:
Buy LTC3417EDHC#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Dual, Sync. 1.4A/800mA, 4MHz Step-dwn Cvtr in DFN
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet