LTC3560_15 Datasheet, PDF (2/16 Pages) Linear Technology – 2.25MHz, 800mA Synchronous Step-Down Regulator in ThinSOT

LTC3560
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage................................... – 0.3V to 6V
SYNC/MODE, 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 6)..... 1.2A
N-Channel Switch Sink Current (DC) (Note 6) ........ 1.2A
Peak SW Sink and Source Current (Note 6) ........... 2.1A
Operating Temperature Range (Note 2)
LTC3560E.............................................–40°C to 85°C
LTC3560I............................................–40°C to 125°C
Junction Temperature (Notes 3, 7) ...................... 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
6 SYNC/MODE
5 V_FB
4 V_IN
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T_JMAX = 125°C, θ_JA = 250°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3560ES6#PBF
LTC3560ES6#TRPBF
LTCFY
6-Lead Plastic TSOT-23
–40°C to 85°C
LTC3560IS6#PBF
LTC3560IS6#TRPBF
LTCFY
6-Lead Plastic TSOT-23
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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/
ELECTRICAL CHARACTERISTICS The l 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
I_VFB
Feedback Current
l
±30
I_PK
Peak Inductor Current
V_IN = 3V, V_FB = 0.5V, Duty Cycle < 35%
1.0
1.5
2.0
V_FB
Regulated Feedback Voltage
(Note 4)
E Grade l 0.588 0.6 0.612
I Grade l 0.582 0.6 0.618
ΔV_FB
Reference Voltage Line Regulation
V_IN = 2.5V to 5.5V (Note 4) E Grade l
0.04
0.4
I Grade l
0.04
0.8
V_LOADREG
V_IN
I_S
f_OSC
f_SYNC
Output Voltage Load Regulation
Input Voltage Range
Input DC Bias Current
Pulse-Skipping Mode
Burst Mode Operation
Shutdown
Oscillator Frequency
SYNC Frequency Range
(Note 5)
V_FB = 0.63V, Mode = High, I_LOAD = 0A
V_FB = 0.63V, Mode = Low, I_LOAD = 0A
V_RUN = 0V, V_IN = 5.5V
V_FB = 0.6V
0.5
l 2.5
5.5
200
300
16
30
0.1
1
l 1.8
2.25
2.7
l
1
3
R_PFET
R_NFET
I_LSW
R_DS(ON) of P-Channel FET
R_DS(ON) of N-Channel FET
SW Leakage
I_SW = 100mA
I_SW = –100mA
V_RUN = 0V, V_SW = 0V or 5.5V, V_IN = 5.5V
0.23 0.35
0.21 0.35
±0.01 ±1
UNITS
nA
A
V
V
%/V
%/V
%
V
μA
μA
μA
MHz
MHz
Ω
Ω
μA
3560fb
2