LTC3406-1.8_15 Datasheet, PDF (2/16 Pages) Linear Technology – 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

LTC3406
LTC3406-1.5/LTC3406-1.8
ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage .................................. – 0.3V to 6V
RUN, V_FB Voltages ..................................... – 0.3V to V_IN
SW Voltage .................................. – 0.3V to (V_IN + 0.3V)
P-Channel Switch Source Current (DC) ............. 800mA
N-Channel Switch Sink Current (DC) ................. 800mA
Peak SW Sink and Source Current ........................ 1.3A
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Junction Temperature (Note 3) ............................ 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
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 PART
NUMBER
LTC3406ES5
S5 PART MARKING
LTA5
Consult LTC Marketing for parts specified with wider operating temperature ranges.
TOP VIEW
RUN 1
GND 2
SW 3
5 V_OUT
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 PART
NUMBER
LTC3406ES5-1.5
LTC3406ES5-1.8
S5 PART MARKING
LTD6
LTC4
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T_A = 25°C.
V_IN = 3.6V unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
I_VFB
V_FB
∆V_FB
V_OUT
∆V_OUT
I_PK
Feedback Current
Regulated Feedback Voltage
Reference Voltage Line Regulation
Regulated Output Voltage
Output Voltage Line Regulation
Peak Inductor Current
LTC3406 (Note 4) T_A = 25°C
LTC3406 (Note 4) 0°C T_A ≤ 85°C
LTC3406 (Note 4) –40°C ≤ T_A ≤ 85°C
V_IN = 2.5V to 5.5V (Note 4)
LTC3406-1.5, I_OUT = 100mA
LTC3406-1.8, I_OUT = 100mA
V_IN = 2.5V to 5.5V
V_IN = 3V, V_FB = 0.5V or V_OUT = 90%,
Duty Cycle < 35%
●
±30
0.5880 0.6 0.6120
0.5865 0.6 0.6135
● 0.5850 0.6 0.6150
●
0.04
0.4
● 1.455 1.500 1.545
● 1.746 1.800 1.854
●
0.04
0.4
0.75
1
1.25
V_LOADREG
V_IN
I_S
f_OSC
Output Voltage Load Regulation
Input Voltage Range
Input DC Bias Current
Active Mode
Sleep Mode
Shutdown
Oscillator Frequency
R_PFET
R_NFET
I_LSW
R_DS(ON) of P-Channel FET
R_DS(ON) of N-Channel FET
SW Leakage
(Note 5)
V_FB = 0.5V or V_OUT = 90%, I_LOAD = 0A
V_FB = 0.62V or V_OUT = 103%, I_LOAD = 0A
V_RUN = 0V, V_IN = 4.2V
V_FB = 0.6V or V_OUT = 100%
V_FB = 0V or V_OUT = 0V
I_SW = 100mA
I_SW = –100mA
V_RUN = 0V, V_SW = 0V or 5V, V_IN = 5V
● 2.5
0.5
5.5
300 400
20
35
0.1
1
● 1.2
1.5
1.8
210
0.4
0.5
0.35 0.45
±0.01 ±1
2
UNITS
nA
V
V
V
%/V
V
V
%/V
A
%
V
µA
µA
µA
MHz
kHz
Ω
Ω
µA
3406fa