LTC4009
LTC4009-1/LTC4009-2
4
4009fd
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. DCIN = 20V, BAT = 12V, GND = 0V unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
SHDN Input Voltage High
l
1.4 V
R
IN
SHDN Pull-Down Resistance 50
kΩ
I
DCS
DCIN Shutdown Current SHDN = 0V 215 µA
I
CLPS
CLP Shutdown Current CLP = 12V, SHDN = 0V or DCDIV = 0V
l
9 18 µA
I
LEAK-BAT
BAT Leakage Current SHDN = 0V or DCDIV = 0V,
0V ≤ CSP = CSN = BAT ≤ 20V
l
–1.5 0 1.5 µA
I
LEAK-CSN
CSN Leakage Current SHDN = 0V or DCDIV = 0V,
0V ≤ CSP = CSN = BAT ≤ 20V
l
–1.5 0 1.5 µA
I
LEAK-CSP
CSP Leakage Current SHDN = 0V or DCDIV = 0V,
0V ≤ CSP = CSN = BAT ≤ 20V
l
–1.5 0 1.5 µA
I
LEAK-SW
SW Leakage Current SHDN = 0V or DCDIV = 0V,
0V ≤ SW ≤ 20V
l
–1 0 2 µA
INTV
DD
Regulator
INTV
DD
Output Voltage No Load
l
4.85 5 5.15 V
∆V
DD
Load Regulation I
DD
= 20mA –0.4 –1 %
I
DD
Short-Circuit Current (Note 6) INTV
DD
= 0V 50 85 130 mA
Switching Regulator
V
CE
Charge Enable Threshold Voltage CLP – BAT, CLP Rising
C-Grade
I-Grade
l
l
65
60
100
135
140
mV
mV
I
ITH
ITH Current ITH = 1.4V –40/+90 µA
f
TYP
Typical Switching Frequency 467 550 633 kHz
f
MIN
Minimum Switching Frequency C
LOAD
= 3.3nF 20 25 kHz
DC
MAX
Maximum Duty Cycle C
LOAD
= 3.3nF 98 99 %
t
R-TG
TGATE Rise Time C
LOAD
= 3.3nF, 10% – 90% 60 110 ns
t
F-TG
TGATE Fall Time C
LOAD
= 3.3nF, 90% – 10% 50 110 ns
t
R-BG
BGATE Rise Time C
LOAD
= 3.3nF, 10% – 90% 60 110 ns
t
F-BG
BGATE Fall Time C
LOAD
= 3.3nF, 90% – 10% 60 110 ns
t
NO
TGATE, BGATE Non-Overlap Time C
LOAD
= 3.3nF, 10% – 10% 110 ns
Float Voltage Select Inputs (LTC4009-1/LTC4009-2 Only)
V
IL
Input Voltage Low 0.5 V
V
IH
Input Voltage High 3.5 V
I
IN
Input Current 0V ≤ V
IN
≤ 5V –10 10 µA
Indicator Outputs
V
OL
Output Voltage Low I
LOAD
= 100µA, PROG = 1.2V 500 mV
I
LEAK
Output Leakage SHDN = 0V, DCDIV = 0V, V
OUT
= 20V
l
–10 10 µA
I
C10
CHRG C/10 Current Sink CHRG = 2.5V
l
15 25 38 µA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC4009C is guaranteed to meet performance specifications
over the 0°C to 85°C operating temperature range. The LTC4009I is
guaranteed to meet performance specifications over the –40°C to 125°C
operating temperature range.
Note 3: Operating junction temperature T
J
(in °C) is calculated from
the ambient temperature T
A
and the total continuous package power
dissipation P
D
(in watts) by the formula T
J
= T
A
+ (θ
JA
• PD). Refer to the
Applications Information section for details.
Note 4: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to GND, unless otherwise
specified.
Note 5: This threshold is guaranteed to be satisfied if CLP = DCIN when
the LTC4009 exits shutdown.
Note 6: Output current may be limited by internal power dissipation. Refer
to the Applications Information section for details.
