Storage Temperature Range .................. –65°C to 150°C
pin conFiguraTion
TOP VIEW
TOP VIEW
GND
CLN
ITH
IID
CC
IN
ENC
IBMON
CX
22 IGATE
21 OFB
20 CSP
29
GND
19 CSN
18 BGATE
17 BAT
16 BFB
15 FBG
9 10 11 12 13 14
BIAS
TMR
FLT
GND
CHRG
NTC
CL
TMR
GND
FLT
CHRG
BIAS
1
2
3
4
5
6
7
8
9
28 IL
27 IIMON
26
RST
25 VM
24 GND
23 IN
22 CLN
21 CC
20 ITH
19 IID
18 IGATE
17 OFB
16 CSP
15 CSN
28 27 26 25 24 23
VM 1
RST
2
IIMON 3
IL 4
ENC 5
IBMON 6
CX 7
CL 8
NTC 10
FBG 11
BFB 12
BAT 13
BGATE 14
UFD PACKAGE
28-LEAD (4mm
×
5mm) PLASTIC QFN
T
JMAX
= 125°C,
θ
JA
= 43°C/W,
θ
JC
= 4°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
GN PACKAGE
28-LEAD PLASTIC SSOP
T
JMAX
= 125°C,
θ
JA
= 80°C/W,
θ
JC
= 25°C/W
orDer inForMaTion
LEAD FREE FINISH
LTC4000EUFD#PBF
LTC4000IUFD#PBF
LTC4000EGN#PBF
LTC4000IGN#PBF
TAPE AND REEL
LTC4000EUFD#TRPBF
LTC4000IUFD#TRPBF
LTC4000EGN#TRPBF
LTC4000IGN#TRPBF
PART MARKING*
4000
4000
LTC4000GN
LTC4000GN
PACKAGE DESCRIPTION
28-Lead (4mm
×
5mm) Plastic QFN
28-Lead (4mm
×
5mm) Plastic QFN
28-Lead Plastic SSOP
28-Lead Plastic SSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
4000fb
2
For more information
www.linear.com/LTC4000
LTC4000
elecTrical characTerisTics
SYMBOL
V
IN
I
IN
I
BAT
Shutdown
ENC Input Voltage Low
ENC Input Voltage High
ENC Pull-Up Current
ENC Open Circuit Voltage
Voltage Regulation
V
BFB_REG
Battery Feedback Voltage
l
l
l
The
l
denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= V
CLN
= 3V to 60V unless otherwise noted (Notes 2, 3).
PARAMETER
Input Supply Operating Range
Input Quiescent Operating Current
Battery Pin Operating Current
Battery Only Quiescent Current
V
IN
≥ 3V, V
CSN
= V
CSP
≥ V
BAT
V
IN
= 0V, V
CSN
= V
CSP
≤ V
BAT
l
l
CONDITIONS
l
MIN
3
TYP
0.4
50
10
MAX
60
100
20
0.4
UNITS
V
mA
µA
μA
V
V
µA
V
1.5
–4
–2
2.5
1.136
1.136
± 0.1
1.193
± 0.1
100
96.9
82
65
97.6
0.5
86
68
3
1.139
1.147
1.204
400
98.3
90
71
–0.5
1.5
1.133
1.120
1.176
V
ENC
= 0V
V
ENC
= Open
l
V
V
µA
V
µA
Ω
%
%
%
%
%
BFB Input Current
V
OFB_REG
R
FBG
V
RECHRG(RISE)
V
RECHRG(HYS)
V
OUT(INST_ON)
V
LOBAT
V
LOBAT(HYS)
Current Regulation
Ratio of Monitored-Current Voltage to Sense
Voltage
V
OS
Sense Voltage Offset
CLN, CSP, CSN Common Mode Range
CLN Pin Current
CSP Pin Current
CSN Pin Current
I
IL
I
CL
I
CL_TRKL
Pull-Up Current for the Input Current Limit
Programming Pin
Pull-Up Current for the Charge Current Limit
Programming Pin
Pull-Up Current for the Charge Current Limit
Programming Pin in Trickle Charge Mode
Input Current Monitor Resistance to GND
Charge Current Monitor Resistance to GND
Output Feedback Voltage
OFB Input Current
Ground Return Feedback Resistance
Rising Recharge Battery Threshold Voltage
Instant-On Battery Voltage Threshold
Falling Low Battery Threshold Voltage
Low Battery Threshold Voltage Hysteresis
V
BFB
= 1.2V
l
V
OFB
= 1.2V
l
% of V
BFB_REG
% of V
BFB_REG
% of V
BFB_REG
% of V
BFB_REG
V
IN,CLN
≤ 50mV, V
IIMON
/V
IN,CLN
V
CSP,CSN
≤ 50mV, V
IBMON
/V
CSP,CSN
V
CSP,CSN
≤ 50mV, V
CSP
= 60V or
V
IN,CLN
≤ 50mV, V
IN
= 60V (Note 4)
(Note 4)
V
IGATE
= Open, V
IID
= 0V
V
BGATE
= Open, V
BAT
= 0V
l
Recharge Battery Threshold Voltage Hysteresis % of V
BFB_REG
l
l
l
18.5
20
21
V/V
–300
l
300
60
±1
90
45
µV
V
µA
μA
μA
3
l
l
–55
–55
–5.5
40
40
–50
–50
–5.0
90
90
0
1.0
–45
–45
–4.5
140
140
10
1.015
μA
μA
μA
kΩ
kΩ
mV
V
V
BFB
< V
LOBAT
l
A4, A5 Error Amp Offset for the Current Loops V
CL
= 0.8V, V
IL
= 0.8V
(See Figure 1)
Maximum Programmable Current Limit
Voltage Range
l
l
–10
0.985
4000fb
For more information
www.linear.com/LTC4000
3
LTC4000
elecTrical characTerisTics
SYMBOL
PARAMETER
CX Pin Pull-Up Current
V
CX,IBMON(OS)
V
CX,IBMON(HYS)
CX Comparator Offset Voltage, IBMON Falling
CX Comparator Hysteresis Voltage
TMR Pull-Up Current
TMR Pull-Down Current
TMR Pin Frequency
TMR Threshold for CX Termination
t
T
t
T
/t
BB
V
NTC(COLD)
V
NTC(HOT)
V
NTC(HYS)
V
NTC(OPEN)
R
NTC(OPEN)
V
VM(TH)
V
VM(HYS)
Charge Termination Time
C
TMR
= 0.1μF
Ratio of Charge Terminate Time to Bad Battery C
TMR
= 0.1μF
Indicator Time
NTC Cold Threshold
NTC Hot Threshold
NTC Thresholds Hysteresis
NTC Open Circuit Voltage
NTC Open Circuit Input Resistance
VM Input Falling Threshold
VM Input Hysteresis
VM Input Current
I
RST,CHRG,FLT(LKG)
Open Drain Status Pins Leakage Current
V
RST,CHRG,FLT(VOL)
Open Drain Status Pins Voltage Output Low
Input PowerPath Control
Input PowerPath Forward Regulation Voltage
Input PowerPath Fast Reverse Turn-Off
Threshold Voltage
Input PowerPath Fast Forward Turn-On
Threshold Voltage
Input Gate Turn-Off Current
Input Gate Turn-On Current
I
IGATE(FASTOFF)
I
IGATE(FASTON)
V
IGATE(ON)
Input Gate Fast Turn-Off Current
Input Gate Fast Turn-On Current
Input Gate Clamp Voltage
V
IID,CSP
, 3V ≤ V
CSP
≤ 60V
V
IID,CSP
, 3V ≤ V
CSP
≤ 60V,
V
IGATE
= V
CSP
– 2.5V,
∆I
IGATE
/∆ V
IID,CSP
≥ 100μA/mV
V
IID,CSP
, 3V ≤ V
CSP
≤ 60V,
V
IGATE
= V
IID
– 1.5V,
∆I
IGATE
/∆ V
IID,CSP
≥ 100μA/mV
V
IID
= V
CSP
, V
IGATE
= V
CSP
– 1.5V
V
CSP
= V
IID
– 20mV,
V
IGATE
= V
IID
– 1.5V
V
CSP
= V
IID
+ 0.1V,
V
IGATE
= V
CSP
– 3V
V
CSP
= V
IID
– 0.2V,
V
IGATE
= V
IID
– 1.5V
I
IGATE
= 2µA, V
IID
= 12V to 60V,
V
CSP
= V
IID
– 0.5V, Measure
V
IID
– V
IGATE
I
IGATE
= – 2μA, V
IID
= 3V to 59.9V,
V
CSP
= V
IID
+ 0.5V, Measure
V
CSP
– V
IGATE
l
l
l
l
The
l
denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= V
CLN
= 3V to 60V unless otherwise noted (Notes 2, 3).
CONDITIONS
V
CX
= 0.1V
V
CX
= 0.1V
V
TMR
= 0V
V
TMR
= 2V
C
TMR
= 0.01μF
l
l
l
l
l
l
l
MIN
–5.5
0.5
TYP
–5.0
10
5
–5.0
5.0
MAX
–4.5
25
UNITS
µA
mV
mV
μA
μA
Charge Termination
400
2.3
3.95
73
33
45
500
2.1
2.9
4
75
35
5
50
300
600
2.5
3.5
4.05
77
37
55
Hz
V
h
h/h
%
%
%
%
kΩ
V
NTC
Rising, % of V
BIAS
V
NTC
Falling, % of V
BIAS
% of V
BIAS
% of V
BIAS
l
Voltage Monitoring and Open Drain Status Pins
1.176
1.193
40
V
VM
= 1.2V
V
PIN
= 60V
I
PIN
= 1mA
l
1.204
V
mV
µA
µA
±0.1
±1
0.4
0.1
–90
8
–50
20
–20
V
mV
mV
l
40
80
130
mV
–0.3
0.3
–0.5
0.7
13
15
μA
μA
mA
mA
V
Input Gate Off Voltage
l
0.45
0.7
V
4000fb
4
For more information
www.linear.com/LTC4000
LTC4000
elecTrical characTerisTics
SYMBOL
PARAMETER
Battery Discharge PowerPath Forward
Regulation Voltage
Battery PowerPath Fast Reverse Turn-Off
Threshold Voltage
Battery PowerPath Fast Forward Turn-On
Threshold Voltage
Battery Gate Turn-Off Current
Battery PowerPath Control
V
BAT,CSN
, 2.8V ≤ V
BAT
≤ 60V
V
BAT,CSN
, 2.8V ≤ V
BAT
≤ 60V, Not
Charging, V
BGATE
= V
CSN
– 2.5V,
∆I
BGATE
/∆V
BAT,CSN
≥ 100μA/mV
V
BAT,CSN
, 2.8V ≤ V
CSN
≤ 60V,
V
BGATE
= V
BAT
– 1.5V,
∆I
BGATE
/∆ V
BAT,CSN
≥ 100μA/mV
V
BGATE
= V
CSN
– 1.5V, V
CSN
≥ V
BAT
,
V
OFB
< V
OUT(INST_ON)
and Charging
in Progress, or V
CSN
= V
BAT
and Not
Charging
V
BGATE
= V
BAT
– 1.5V, V
CSN
≥ V
BAT
,
V
OFB
> V
OUT(INST_ON)
and Charging in
Progress, or V
CSN
= V
BAT
– 20mV
V
CSN
= V
BAT
+ 0.1V and Not
Charging, V
BGATE
= V
CSN
– 3V
V
CSN
= V
BAT
– 0.2V,
V
BGATE
= V
BAT
– 1.5V
I
BGATE
= 2μA, V
BAT
= 12V to 60V,
V
CSN
= V
BAT
– 0.5V, Measure
V
BAT
– V
BGATE
l
l
l
The
l
denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= V
CLN
= 3V to 60V unless otherwise noted (Notes 2, 3).
CONDITIONS
MIN
0.1
–90
TYP
8
–50
MAX
20
–20
UNITS
mV
mV
l
40
80
130
mV
–0.3
μA
Battery Gate Turn-On Current
0.3
μA
I
BGATE(FASTOFF)
I
BGATE(FASTON)
V
BGATE(ON)
Battery Gate Fast Turn-Off Current
Battery Gate Fast Turn-On Current
Battery Gate Clamp Voltage
–0.5
0.7
13
15
mA
mA
V
Battery Gate Off Voltage
l
I
BGATE
= – 2μA, V
BAT
= 2.8V to 60V,
V
CSN
= V
BAT
+ 0.5V and not Charging,
Measure V
CSN
– V
BGATE
0.45
0.7
V
BIAS Regulator Output and Control Pins
V
BIAS
∆V
BIAS
BIAS Output Voltage
BIAS Output Voltage Load Regulation
BIAS Output Short-Circuit Current
Transconductance of Error Amp
Open Loop DC Voltage Gain of Error Amp
I
ITH(PULL_UP)
I
ITH(PULL_DOWN)
Pull-Up Current on the ITH Pin
Pull-Down Current on the ITH Pin
Open Loop DC Voltage Gain of ITH Driver
No Load
I
BIAS
= – 0.5mA
V
BIAS
= 0V
CC = 1V
CC = Open
V
ITH
= 0V, CC = 0V
V
ITH
= 0.4V, CC = Open
ITH = Open
l
l
2.4
2.9
–0.5
–12
0.5
80
3.5
–10
V
%
mA
mA/V
dB
–6
0.5
–5
1
60
–4
μA
mA
dB
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 LTC4000 is tested under conditions such that T
J
≈ T
A
. The
LTC4000E is guaranteed to meet specifications from 0°C to 85°C junction
temperature. Specifications over the –40°C to 125°C operating junction
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTC4000I is guaranteed over the
full –40°C to 125°C operating junction temperature range. Note that the
maximum ambient temperature consistent with these specifications is
determined by specific operating conditions in conjunction with board
layout, the rated package thermal impedance and other environmental
factors. The junction temperature (T
J
, in °C) is calculated from the ambient
temperature (T
A
, in °C) and power dissipation (P
D
, in Watts) according to
the following formula:
T
J
= T
A
+ (P
D
•
θ
JA
), where
θ
JA
(in °C/W) is the package thermal
impedance.
Note 3:
All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.
Note 4:
These parameters are guaranteed by design and are not 100%
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