LTC4007-1_15 Datasheet, PDF (4/24 Pages) Linear Technology – 4A, High Efficiency, Li-Ion Battery Charger

LTC4007-1
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range (Note 4), otherwise specifications are at T_A = 25°C. V_DCIN = 20V, V_BAT = 12V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
V_OL
Low Logic Level of ACP, CHG, FLAG, LOBAT,
I_OL = 100µA
I_CL, FAULT
V_OH
High Logic Level of CHG, LOBAT, I_CL
I_OH = –1µA
I_OFF
Off State Leakage Current of ACP, FLAG, FAULT V_OH = 3V
I_PO
Pull-Up Current on CHG, LOBAT, I_CL
V = 0V
Timer Defeat Threshold at CHG
●
0.5
● 2.7
–1
1
– 10
1
Programming Inputs (CHEM and 3C4C)
V_IH
V_IL
I_PI
Oscillator
High Logic Level
Low Logic Level
Pull-Up Current
V = 0V
●
●1
3.3
– 14
f_OSC
Regulator Switching Frequency
f_MIN
Regulator Switching Frequency in Drop Out
DC_MAX Regulator Maximum Duty Cycle
Gate Drivers (TGATE, BGATE)
Duty Cycle ≥ 98%
V_CSP = V_BAT
255
300
345
20
25
98
99
TGTR
TGTF
BGTR
BGTF
V_TGATE High (V_CLN – V_TGATE)
V_BGATE High
V_TGATE Low (V_CLN – V_TGATE)
V_BGATE Low
TGATE Transition Time
TGATE Rise Time
TGATE Fall Time
BGATE Transition Time
BGATE Rise Time
BGATE Fall Time
V_TGATE at Shutdown (V_CLN – V_TGATE)
V_BGATE at Shutdown
I_TGATE = –1mA
C_LOAD = 3000pF
C_LOAD = 3000pF
I_BGATE = 1mA
C_LOAD = 3000pF, 10% to 90%
C_LOAD = 3000pF, 10% to 90%
C_LOAD = 3000pF, 10% to 90%
C_LOAD = 3000pF, 10% to 90%
I_TGATE = –1µA, DCIN = 0V, CLN = 12V
I_BGATE = 1µA, DCIN = 0V, CLN = 12V
50
4.5
5.6
10
4.5
5.6
10
50
50
110
50
100
40
90
40
80
100
100
UNITS
V
V
µA
µA
V
V
V
µA
kHz
kHz
%
mV
V
V
mV
ns
ns
ns
ns
mV
mV
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: See Test Circuit.
Note 3: Does not include tolerance of current sense resistor or current
programming resistor.
Note 4: The LTC4007E-1 is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
40071f
4