Datasheet
LTC3416
2
3416fa
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Voltage Range 2.25 5.5 V
V
FB
Regulated Feedback Voltage (Note 3) ● 0.784 0.800 0.816 V
I
FB
Feedback Input Current 0.2 µA
I
TRACK
TRACK Input Current 0.2 µA
∆V
FB
Reference Voltage Line Regulation V
IN
= 2.5V to 5.5V (Note 3) 0.04 0.2 %/V
V
TRACK
Tracking Voltage Offset V
TRACK
= 0.4V 30 mV
Tracking Voltage Range 0 0.8 V
V
LOADREG
Output Voltage Load Regulation Measured in Servo Loop, V
ITH
= 0.36V 0.02 0.2 %
Measured in Servo Loop, V
ITH
= 0.84V –0.02 –0.2 %
∆V
PGOOD
Power Good Range ±7.5 ±9%
R
PGOOD
Power Good Resistance 120 200 Ω
I
Q
Input DC Bias Current (Note 4)
Active Current V
FB
= 0.7V, V
ITH
= 1.2V 300 350 µA
Shutdown V
RUN
= 0V 0.02 1 µA
f
OSC
Switching Frequency R
OSC
= 294kΩ 0.88 1 1.12 MHz
Switching Frequency Range (Note 4) 0.30 4.00 MHz
R
PFET
R
DS(ON)
of P-Channel FET I
SW
= 300mA 67 100 mΩ
R
NFET
R
DS(ON)
of N-Channel FET I
SW
= –300mA 50 100 mΩ
I
LIMIT
Peak Current Limit 68 A
V
UVLO
Undervoltage Lockout Threshold 1.75 2 2.25 V
I
LSW
SW Leakage Current V
RUN
= 0V, V
IN
= 5.5V 0.1 1 µA
V
RUN
RUN Threshold 0.5 0.65 0.8 V
Input Supply Voltage .................................. –0.3V to 6V
I
TH
, RUN, V
FB
Voltages .............................. – 0.3V to V
IN
TRACK Voltage .......................................... – 0.3V to V
IN
SW Voltage .................................. –0.3V to (V
IN
+ 0.3V)
Operating Ambient Temperature Range
(Note 2) .................................................. – 40°C to 85°C
Junction Temperature (Notes 5, 6) ...................... 125°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
ORDER PART
NUMBER
(Note 1)
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC3416EFE
T
JMAX
= 125°C, θ
JA
= 38°C/W, θ
JC
= 10°C/W
EXPOSED PAD IS GND (PIN 21)
MUST BE SOLDERED TO PCB
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 3.3V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
FE PACKAGE
20-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
9
10
TOP VIEW
20
19
18
17
16
15
14
13
12
11
PGND
R
T
TRACK
RUN/SS
SGND
NC
PV
IN
SW
SW
PGND
PGND
V
FB
I
TH
PGOOD
SV
IN
NC
PV
IN
SW
SW
PGND
21
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/