LTC3404IMS8 Datasheet, PDF (2/16 Pages) Linear Technology – 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator

LTC3404
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (V_IN)...........................– 0.3V to 7V
I_TH, PLL LPF Voltage ................................– 0.3V to 2.7V
RUN, V_FB Voltages ...................................... – 0.3V to V_IN
SYNC/MODE Voltage .................................. – 0.3V to V_IN
SW Voltage (DC) .......................... – 0.3V to (V_IN + 0.3V)
P-Channel MOSFET Source Current (DC) ........... 800mA
N-Channel MOSFET Sink Current (DC) ............... 800mA
Peak SW Sink and Source Current ........................ 1.5A
Operating Temperature Range (Note 2)
LTC3404E/LTC3404I ........................... –40°C to 85°C
LTC3404MP ...................................... –55°C to 125°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
RUN 1
I_TH 2
V_FB 3
GND 4
TOP VIEW
8 PLL LPF
7 SYNC/MODE
6 V_IN
5 SW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T_JMAX = 125°C, θ_JA = 125°C/W
ORDER PART NUMBER MS8 PART MARKING
LTC3404EMS8
LTC3404IMS8
LTC3404MPMS8
LTKR
LTCJR
LTCXG
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/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over –40°C to 85°C, otherwise specifications are TA = 25°C.
V_IN = 3.6V unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN
I_VFB
Feedback Current
V_FB
Regulated Output Voltage
ΔV_OVL
ΔV_FB
V_LOADREG
Output Overvoltage Lockout
Reference Voltage Line Regulation
Output Voltage Load Regulation
V_IN
Input Voltage Range
I_Q
Input DC Bias Current
Pulse Skipping Mode
Burst Mode Operation
Shutdown
f_OSC
Oscillator Frequency
f_SYNC
I_{PLL LPF}
R_PFET
R_NFET
I_PK
I_LSW
V_SYNC/MODE
I_SYNC/MODE
V_RUN
I_RUN
SYNC Capture Range
Phase Detector Output Current
Sinking Capability
Sourcing Capability
R_DS(ON) of P-Channel MOSFET
R_DS(ON) of N-Channel MOSFET
Peak Inductor Current
SW Leakage
SYNC/MODE Threshold
SYNC/MODE Leakage Current
RUN Threshold
RUN Input Current
(Note 4)
(Note 4) 0°C ≤ T_A ≤ 85°C
(Note 4) – 40°C ≤ T_A ≤ 85°C
ΔV_OVL = V_OVL – V_FB
V_IN = 2.65V to 6V (Note 4)
Measured in Servo Loop; V_ITH = 0.9V to 1.2V
Measured in Servo Loop; V_ITH = 1.6V to 1.2V
(Note 5)
2.65V < V_IN < 6V, V_SYNC/MODE = 0V, I_OUT = 0A
V_SYNC/MODE = V_IN, I_OUT = 0A
V_RUN = 0V, V_IN = 6V
V_FB = 0.8V
V_FB = 0V
f_PLLIN < f_OSC
f_PLLIN > f_OSC
I_SW = 100mA
I_SW = –100mA
V_IN = 3.3V, V_FB = 0.7V, Duty Cycle < 35%
V_RUN = 0V, V_SW = 0V or 6V, V_IN = 6V
V_SYNC/MODE Rising
V_RUN Rising
●
0.784
● 0.74
●
20
●
●
● 2.65
● 1.25
1.0
●
6
● –6
0.8
● 0.3
● 0.3
TYP
4
0.8
0.8
50
0.05
0.1
– 0.1
400
10
0
1.4
200
20
– 20
0.5
0.6
1.0
± 0.01
1.0
± 0.01
0.7
± 0.01
MAX
30
0.816
0.84
110
0.2
0.5
– 0.5
6
700
15
1
1.65
1.7
40
– 40
0.7
0.8
1.25
±1
1.5
±1
1.5
±1
2
UNITS
nA
V
V
mV
%/V
%
%
V
μA
μA
μA
MHz
kHz
MHz
μA
μA
Ω
Ω
A
μA
V
μA
V
μA
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