C ........................................................................................................................................................................ 17
Applications Information .......................................................................................................40
Operating Junction Temperature Range ... –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
28 27 26 25 24 23
UFD PACKAGE
28-LEAD (4mm
×
5mm) PLASTIC QFN
T
JMAX
= 125°C,
θ
JA
= 43°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
LTC4156EUFD#PBF
LTC4156IUFD#PBF
TAPE AND REEL
LTC4156EUFD#TRPBF
LTC4156IUFD#TRPBF
PART MARKING*
4156
4156
PACKAGE DESCRIPTION
28-Lead (4mm × 5mm × 0.75mm) Plastic QFN
28-Lead (4mm × 5mm × 0.75mm) Plastic QFN
TEMPERATURE RANGE
–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/
4156fa
3
LTC4156
elecTrical characTerisTics
SYMBOL
V
BUS
V
BUSREG
I
VBUSQ
PARAMETER
Input Supply Voltage
Undervoltage Current Reduction
Input Quiescent Current
Input Undervoltage Current Limit Enabled
USB Suspend Mode
100mA I
VBUS
Mode, I
VOUT
= 0µA, Charger Off
500mA – 3A I
VBUS
Modes, I
VOUT
= 0µA, Charger Off
CLPROG1 Mode, I
VOUT
= 0µA, Charger Off
V
BUS
> V
UVLO
, Battery Charger Off, I
VOUT
= 0µA
V
BUS
= 0V, I
VOUT
= 0µA
Storage and Shipment Mode, DVCC = 0V
100mA I
VBUS
Mode (USB Lo Power) (Default)
500mA I
VBUS
Mode (USB Hi Power)
600mA I
VBUS
Mode
700mA I
VBUS
Mode
800mA I
VBUS
Mode
900mA I
VBUS
Mode (USB 3.0)
1.00A I
VBUS
Mode
1.25A I
VBUS
Mode
1.50A I
VBUS
Mode
1.75A I
VBUS
Mode
2.00A I
VBUS
Mode
2.25A I
VBUS
Mode
2.50A I
VBUS
Mode
2.75A I
VBUS
Mode
3.00A I
VBUS
Mode (Default)
2.5mA I
VBUS
Mode (USB Suspend)
3.45V Setting (Default)
3.55V Setting
3.60V Setting
3.80V Setting
12.50% Charge Current Mode
18.75% Charge Current Mode
25.00% Charge Current Mode
31.25% Charge Current Mode
37.50% Charge Current Mode
43.75% Charge Current Mode
50.00% Charge Current Mode
56.25% Charge Current Mode
62.50% Charge Current Mode
68.75% Charge Current Mode
75.00% Charge Current Mode
81.25% Charge Current Mode
87.50% Charge Current Mode
93.75% Charge Current Mode
100.0% Charge Current Mode (Default)
100.0% Charge Current Mode, R
PROG
= 340Ω
Suspend Mode, I
VOUT
= 1mA
Battery Charger Enabled, Charging, BATSNS ≥ 3.19V
Battery Charger Terminated or Battery Charger
Disabled
Battery Charger Enabled, Charging, BATSNS ≤ 3.0V
3.10
l
l
The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
A
≈
T
J
= 25°C (Note 2). V
BUS
= 5V, BATSNS = 3.3V, DVCC = 3.3V,
R
CLPROG1
= R
CLPROG2
= 1.21k, R
PROG
= 499Ω, unless otherwise noted.
CONDITIONS
l
MIN
4.35
TYP
MAX
5.5
UNITS
V
V
mA
mA
mA
mA
Switching Battery Charger
4.30
0.060
0.560
17
17
7.0
2.0
0.6
65
460
550
650
745
800
950
1150
1425
1650
1900
2050
2350
2550
2800
3.42
3.52
3.57
3.77
290
430
577
720
870
1013
1162
1316
1458
1601
1743
1881
2024
2166
2309
3.44
80
480
570
670
770
850
1000
1230
1500
1750
2000
2175
2475
2725
2950
1.8
3.45
3.55
3.60
3.80
315
465
620
770
925
1075
1230
1385
1535
1685
1835
1980
2130
2280
2430
3.57
4.35
BATSNS
4.35
3.19
3.0
1.25
100
500
600
700
800
900
1025
1300
1575
1875
2125
2300
2600
2900
3100
2.5
3.48
3.58
3.63
3.83
340
500
663
820
981
1137
1298
1454
1612
1769
1927
2079
2237
2394
2552
3.70
4.5
4.5
I
BATQ
I
VBUSLIM
Battery Drain Current
µA
µA
µA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
V
V
V
V
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
A
V
V
V
V
Total Input Current When Load
Exceeds Power Limit
l
V
FLOAT
BATSNS Regulated Output Voltage
Selected by I
2
C Control.
Switching Modes
Regulated Battery Charge Current
Selected by I
2
C Control
l
l
l
l
I
CHARGE
I
CHARGE(MAX)
V
OUT
Regulated Battery Charge Current
PowerPath Regulated Output
Voltage (V
BUS
Power Available)
Low Battery Instant-On Output
Voltage (V
BUS
Power Available)
V
OUT(MIN)
4
4156fa
LTC4156
The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
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