LTC3401 Datasheet, PDF (2/16 Pages) Linear Technology – 1A, 3MHz Micropower Synchronous Boost Converter

LTC3401
ABSOLUTE AXI U RATI GS
(Note 1)
V_IN, V_OUT Voltages ...................................... – 0.5V to 6V
SW Voltage ................................................. – 0.5V to 6V
V_C, R_t Voltages ......................... – 0.5V to (V_OUT + 0.3V)
PGOOD, SHDN, FB, MODE Voltages ........... – 0.5V to 6V
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
R_t 1
MODE 2
V_IN 3
SW 4
GND 5
TOP VIEW
10 SHDN
9 V_C
8 FB
7 V_OUT
6 PGOOD
MS PACKAGE
10-LEAD PLASTIC MSOP
T_JMAX = 125°C
θ_JA = 130°C/ W 1 LAYER BOARD
θ_JA = 100°C/ W 4 LAYER BOARD
ORDER PART
NUMBER
LTC3401EMS
MS PART MARKING
LTPG
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The q denotes specifications that apply over the full operating temperature range, otherwise specifications are at T_A = 25°C.
V_IN = 1.2V, V_OUT = 3.3V unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX
Minimum Start-Up Voltage
Minimum Operating Voltage
I_LOAD < 1mA
(Note 4)
0.85
1.0
q
0.5
Output Voltage Adjust Range
q 2.6
5.5
Feedback Voltage
q 1.22 1.25 1.28
Feedback Input Current
Quiescent Current—Burst Mode Operation
Quiescent Current—SHDN
V_FB = 1.25V
V_C = 0V, MODE/SYNC = 3.3V (Note 3)
SHDN = 0V, Not Including Switch Leakage
1
50
38
65
0.1
1
Quiescent Current—Active
NMOS Switch Leakage
V_C = 0V, MODE/SYNC = 0V, R_t = 300k (Note 3)
440 800
0.1
5
PMOS Switch Leakage
0.1
10
NMOS Switch On Resistance
0.16
PMOS Switch On Resistance
0.18
NMOS Current Limit
q1
1.6
NMOS Burst Current Limit
0.66
Maximum Duty Cycle
Minimum Duty Cycle
R_t = 15k
q 80
85
q
0
Frequency Accuracy
MODE/SYNC Input High
R_t = 15k
q 1.6
2
2.4
1.4
MODE/SYNC Input Low
0.4
MODE/SYNC Input Current
Error Amp Transconductance
PGOOD Threshold
V_MODE/SYNC = 5.5V
∆I = – 5µA to 5µA, V_C = V_FB
Referenced to Feedback Voltage
0.01
1
85
–6
–9
– 12
UNITS
V
V
V
V
nA
µA
µA
µA
µA
µA
Ω
Ω
A
A
%
%
MHz
V
V
µA
µmhos
%
3401fa
2