LTC3406AB Datasheet, PDF (2/16 Pages) Linear Technology – 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

LTC3406AB
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage....................................– 0.3V to 6V
RUN, V_FB Voltages .......................................–0.3V to V_IN
SW Voltage (DC)........................... – 0.3V to (V_IN + 0.3V)
P-Channel Switch Source Current (DC)
(Note 7)................................................................800mA
N-Channel Switch Sink Current (DC) (Note 7) .....800mA
Peak SW Sink and Source Current (Note 7) .............1.3A
Operating Temperature Range (Note 2) ...– 40°C to 85°C
Junction Temperature (Notes 3, 6) ....................... 125°C
Storage Temperature Range...................– 65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
PIN CONFIGURATION
TOP VIEW
RUN 1
GND 2
SW 3
5 V_FB
4 V_IN
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T_JMAX = 125°C, θ_JA = 250°C/W, θ_JC = 90°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3406ABES5#PBF
LTC3406ABES5#TRPBF LTCXZ
5-Lead Plastic TSOT-23
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 3.6V unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
I_VFB
Feedback Current
V_FB
Regulated Feedback Voltage
(Note 4)
ΔV_FB
Reference Voltage Line Regulation V_IN = 2.5V to 5.5V (Note 4)
I_PK
Peak Inductor Current
V_IN = 3V, V_FB = 0.5V
Duty Cycle < 35%
●
±30
nA
● 0.5880 0.6 0.6120
V
●
0.04 0.4
%/V
0.75
1
1.25
A
V_LOADREG
V_IN
I_S
f_OSC
R_PFET
R_NFET
I_LSW
t_SOFTSTART
Output Voltage Load Regulation
Input Voltage Range
Input DC Bias Current
Active Mode
Shutdown
Oscillator Frequency
R_DS(ON) of P-Channel FET
R_DS(ON) of N-Channel FET
SW Leakage
Soft-Start Time
(Note 5)
V_FB = 0.63V
V_RUN = 0V, V_IN = 5.5V
V_FB = 0.6V
I_SW = 100mA
I_SW = –100mA
V_RUN = 0V, V_SW = 0V or 5V, V_IN = 5V
V_FB from 10% to 90% Full-scale
0.5
%
● 2.5
5.5
V
200
300
μA
0.1
1
μA
● 1.2
1.5
1.8
MHz
0.23 0.35
Ω
0.21 0.35
Ω
±0.01 ±1
μA
0.6
0.9
1.2
ms
3406abfa
2