LT1616ES6#TR Linear Technology, LT1616ES6#TR Datasheet - Page 4

• Manufacturer Part Number: LT1616ES6#TR
• Description: IC REG SW 1.4MHZ STEPDWN SOT23-6
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1616ES6#TR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3.3V, 5V
• Current - Output: 600mA
• Frequency - Switching: 1.4MHz
• Voltage - Input: 3.6 ~ 25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

BOOST (Pin 1): The BOOST pin is used to provide a drive
voltage, higher than the input voltage, to the internal
bipolar NPN power switch.
GND (Pin 2): Tie the GND pin to a local ground plane below
the LT1616 and the circuit components. Return the feed-
back divider to this pin.
FB (Pin 3): The LT1616 regulates its feedback pin to 1.25V.
Connect the feedback resistor divider tap to this pin. Set
the output voltage according to V
A good value for R2 is 10k.
LT1616
TYPICAL PERFOR A CE CHARACTERISTICS
PI FU CTIO S
4
U
U
1.75
1.50
1.25
1.00
0.75
0.50
2.00
0.25
U
0
–50
Oscillator Frequency
–25
W
TEMPERATURE ( C)
0
OUT
U
= 1.25V (1 + R1/R2).
25
50
75
1616 G09
100
SHDN (Pin 4): The SHDN pin is used to put the LT1616 in
shutdown mode. Tie to ground to shut down the LT1616.
Tie to 2V or more for normal operation. If the shutdown
feature is not used, tie this pin to the V
V
internal regulator and to the internal power switch. This pin
must be locally bypassed.
SW (Pin 6): The SW pin is the output of the internal power
switch. Connect this pin to the inductor, catch diode and
boost capacitor.
IN
(Pin 5): The V
120
100
80
60
40
20
0
SHDN Pin Current
0
5
SHDN PIN VOLTAGE
IN
10
pin supplies current to the LT1616’s
15
20
1616 G10
25
IN
pin.