LTC3424_15 Datasheet, PDF (2/12 Pages) Linear Technology – Low Output Voltage, 3MHz Micropower Synchronous Boost Converters

LTC3423/LTC3424
ABSOLUTE AXI U RATI GS
(Note 1)
V_IN, V_OUT, V_DD Voltages .............................. – 0.5V to 6V
SW Voltage ................................................. – 0.5V to 6V
V_C, R_t Voltages ......................... – 0.5V to (V_OUT + 0.3V)
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
TOP VIEW
R_t 1
MODE 2
V_IN 3
SW 4
GND 5
10 SHDN
9 V_C
8 FB
7 V_OUT
6 V_DD
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
LTC3423EMS
LTC3424EMS
MS PART MARKING
LTQM
LTQN
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_DD = 3.3V, V_OUT = 1.8V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX
V_DD Input Voltage Range
V_IN Operating Voltage Range
Output Voltage Adjust Range
(Note 4)
q 2.7
5.5
q 0.5
5.5
q 1.5
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
0.21
NMOS Current Limit
LTC3423
LTC3424
q1
1.6
q2
2.8
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
V_MODE/SYNC = 5.5V
∆I = – 5µA to 5µA, V_C = V_FB
0.01
1
85
UNITS
V
V
V
V
nA
µA
µA
µA
µA
µA
Ω
Ω
A
A
%
%
MHz
V
V
µA
µmhos
34234f
2