LTC3404 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 ................................... – 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 Ambient 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
I_TH 2
V_FB 3
GND 4
8 PLL LPF
7 SYNC/MODE
6 V_IN
5 SW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T_JMAX = 125°C, θ_JA = 150°C/ W
ORDER PART
NUMBER
LTC3404EMS8
MS8 PART MARKING
LTKR
Consult factory for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
V_IN = 3.6V unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
I_VFB
V_FB
∆V_OVL
∆V_FB
V_LOADREG
V_IN
I_Q
f_OSC
f_SYNC
I_{PLL LPF}
R_PFET
R_NFET
Feedback Current
Regulated Output Voltage
Output Overvoltage Lockout
Reference Voltage Line Regulation
Output Voltage Load Regulation
Input Voltage Range
Input DC Bias Current
Pulse Skipping Mode
Burst Mode Operation
Shutdown
Oscillator Frequency
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
(Note 4)
(Note 4) 0°C ≤ T_A ≤ 85°C
(Note 4) – 40°C ≤ T_A ≤ 85°C
∆V_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
q
4
30
0.784 0.8 0.816
q 0.74
0.8
0.84
q
20
50
110
0.05
0.2
q
0.1
0.5
q
– 0.1 – 0.5
q 2.65
6
400 700
10
15
0
1
q 1.25
1.4
1.65
200
1.0
1.7
q
6
q –6
20
40
–20 –40
0.5
0.7
0.6
0.8
UNITS
nA
V
V
mV
%/V
%
%
V
µA
µA
µA
MHz
kHz
MHz
µA
µA
Ω
Ω
2