LTC3417AIFE-1#PBF Linear Technology, LTC3417AIFE-1#PBF Datasheet - Page 7

• Manufacturer Part Number: LTC3417AIFE-1#PBF
• Description: IC BUCK SYNC ADJ 1A/1.5A 20TSSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3417AIFE-1#PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 5 V
• Current - Output: 1A, 1.5A
• Frequency - Switching: 1.5MHz, 0.6MHz ~ 4MHz
• Voltage - Input: 2.25 ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP Exposed Pad, 20-eTSSOP, 20-HTSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

PIN FUNCTIONS
PHASE (Pin 14/Pin 17): Selects 1A regulator switching
phase with respect to 1.5A regulator switching. Set to
V
When PHASE is at 0V, the 1.5A regulator and the 1A
regulator are switching 180 degrees out-of-phase. Do
not fl oat this pin.
SW1 (Pin 15/Pin 18): Switch Node Connection to the
Inductor for the 1.5A Regulator. This pin swings from
V
FUNCTIONAL DIAGRAM
IN
IN1
, the 1.5A regulator and the 1A regulator are in phase.
to PGND1.
1.5A REGULATOR
1A REGULATOR
V FB1
RUN1
SYNC/MODE
V
RUN2
FB2
REFERENCE
VOLTAGE
0.752V
0.848V
0.848V
0.752V
+
–
+
–
+
–
–
+
–
+
–
+
V
IN2
V B
V
B
I TH1
I
TH2
–
+
+
–
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.
LIMIT
LOGIC
LOGIC
LIMIT
I TH
I
TH
COMPENSATION
COMPENSATION
ANTI-SHOOT-
ANTI-SHOOT-
THROUGH
THROUGH
SLOPE
SLOPE
OSCILLATOR
+
+
+
+
+
+
–
–
–
–
–
–
DELAY
V IN1
V
IN2
PGND1
PGND2
PHASE
FREQ
SW1
SW2
POR
3417A-1 BD
LTC3417A-1
3417a1fa
7