LTC3407EDD-3#PBF Linear Technology, LTC3407EDD-3#PBF Datasheet - Page 5

• Manufacturer Part Number: LTC3407EDD-3#PBF
• Description: IC REG DC/DC DUAL STEPDOWN 10DFN
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3407EDD-3#PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 ~ 5 V
• Current - Output: 1A
• Frequency - Switching: 1.5MHz
• Voltage - Input: 2.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

PIN FUNCTIONS
TYPICAL PERFORMANCE CHARACTERISTICS
V
1. An internal resistive divider divides the output voltage
down for comparison to the internal reference voltage.
RUN1 (Pin 2): Regulator 1 Enable. Forcing this pin to
V
regulator 1 to shut down. Do not fl oat this pin.
V
to GND.
SW1 (Pin 4): Regulator 1 Switch Node Connection to the
Inductor. This pin swings from V
GND (Pin 5): Ground. This pin is not connected internally.
Connect to PCB ground for shielding.
MODE/SYNC (Pin 6): Combination Mode Selection and
Oscillator Synchronization. This pin controls the operation
of the device. When tied to V
tion or pulse-skipping mode is selected, respectively. The
oscillation frequency can be synchronized to an external
IN
OUT1
IN
(Pin 3): Main Power Supply. Must be closely decoupled
–1
–2
–3
–4
enables regulator 1, while forcing it to GND causes
4
3
2
1
0
Load Regulation
1
(Pin 1): Output Voltage Feedback Pin for Channel
PULSE-SKIPPING
MODE
Burst Mode OPERATION
LOAD CURRENT (mA)
NO LOAD ON OTHER CHANNEL
10
V
IN
= 3.6V, V
100
IN
OUT
or GND, Burst Mode opera-
= 1.8V
34073 G12
IN
1000
to GND.
–1
–2
–3
–4
4
3
2
1
0
1
Load Regulation
Burst Mode OPERATION
PULSE-SKIPPING
MODE
LOAD CURRENT (mA)
10
NO LOAD ON OTHER CHANNEL
oscillator applied to this pin and pulse-skipping mode is
automatically selected. Do not fl oat this pin.
SW2 (Pin 7): Regulator 2 Switch Node Connection to the
Inductor. This pin swings from V
POR (Pin 8): Power-On Reset . This common-drain logic
output is pulled to GND when the output voltage falls below
–8.5% of regulation and goes high after 117ms when both
channels are within regulation.
RUN2 (Pin 9): Regulator 2 Enable. Forcing this pin to
V
regulator 2 to shut down. Do not fl oat this pin.
V
An internal resistive divider divides the output voltage down
for comparison to the internal reference voltage.
Exposed Pad (GND) (Pin 11): Power Ground. Connect to
the (–) terminal of C
connected to electrical ground on PCB.
V
IN
OUT2
IN
= 5V, V
enables regulator 2, while forcing it to GND causes
100
(Pin 10): Output Voltage Feedback Pin for Channel 2.
OUT
= 3.3V
34073 G13
T
1000
A
= 25°C unless otherwise specifi ed.
OUT
–0.20
–0.40
–0.60
–0.80
–1.00
0.40
0.20
0.80
0.60
, and (–) terminal of C
0
2
Line Regulation
V
I
OUT
OUT
= 200mA
= 1.8V
3
IN
to GND.
LTC3407-3
V
IN
4
(V)
IN
. Must be
5
34073 G15
34073fb
5
6