SGM4056
High Input Voltage Charger
GENERAL DESCRIPTION
The SGM4056 is a cost-effective, fully integrated high
input voltage single-cell Li-Ion battery charger. The
charger uses a CC/CV charge profile required by Li-Ion
battery. The charger accepts an input voltage up to
26.5V but is disabled when the input voltage exceeds
the OVP threshold, typically 6.8V (SGM4056-6.8) or
10.5V (SGM4056-10.5), to prevent excessive power
dissipation. The 26.5V rating eliminates the over-
voltage protection circuit required in a low input voltage
charger.
The charge current and the end-of-charge (EOC)
current are programmable with external resistors.
When the battery voltage is lower than typically 2.55V,
the charger preconditions the battery with typically 18%
of the programmed charge current. When the charge
current reduces to the programmable EOC current level
during the CV charge phase, an EOC indication is
provided by the
CHG
pin, which is an open-drain
output. An internal thermal foldback function protects
the charger from any thermal failure.
Two indication pins (
PPR
and
CHG
) allow simple
interface to a microprocessor or LEDs. When no
adapter is attached or when disabled, the charger
draws less than 1μA leakage current from the battery.
The SGM4056 is available in Green TDFN-3×3-8L,
TDFN-2×3-8L, TDFN-2×2-8L and SOIC-8 (Exposed
Pad) packages and is rated over the -40℃ to +85℃
temperature range.
FEATURES
●
Complete Charger for Single-Cell Li-Ion or
Polymer Batteries
●
Integrated Pass Element and Current Sensor
●
No External Blocking Diode Required
●
Low Component Count and Cost
●
Programmable Charge Current
●
Programmable End-of-Charge Current
●
Charge Current Thermal Foldback for Thermal
Protection
●
2.55V Trickle Charge Threshold
●
6.8V Input Over-Voltage Protection
for SGM4056-6.8
●
10.5V Input Over-Voltage Protection
for SGM4056-10.5
●
26.5V Maximum Voltage for the Power Input
●
Power Presence and Charge Indications
●
Less than
1μA Leakage Current off the Battery
When No Input Power Attached or Charger
Disabled
●
Available in Green TDFN-3×3-8L, TDFN-2×3-8L,
TDFN-2×2-8L and SOIC-8 (Exposed Pad) Packages
APPLICATIONS
Mobile Phones
Blue-Tooth Devices
PDAs
MP3 Players
Stand-Alone Chargers
Other Handheld Devices
SG Micro Corp
www.sg-micro.com
OCTOBER 2017 – REV. A. 4
SGM4056
PACKAGE/ORDERING INFORMATION
MODEL
V
OVP
(V)
6.8V
6.8V
6.8V
6.8V
SGM4056
10.5V
10.5V
10.5V
10.5V
SPECIFIED
PACKAGE
TEMPERATURE
DESCRIPTION
RANGE
TDFN-3×3-8L
TDFN-2×3-8L
TDFN-2×2-8L
SOIC-8
(Exposed Pad)
TDFN-3×3-8L
TDFN-2×3-8L
TDFN-2×2-8L
SOIC-8
(Exposed Pad)
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
-40℃ to +85℃
High Input Voltage Charger
ORDER NUMBER
SGM4056-6.8YTDB8G/TR
SGM4056-6.8YTDC8G/TR
SGM4056-6.8YTDE8G/TR
SGM4056-6.8YPS8G/TR
SGM4056-10.5YTDB8G/TR
SGM4056-10.5YTDC8G/TR
SGM4056-10.5YTDE8G/TR
SGM4056-10.5YPS8G/TR
PACKAGE
MARKING
SGM
G9DB
XXXXX
SGB
XXXX
SG7
XXXX
SGM
4056-6.8YPS8
XXXXX
SGM
GADB
XXXXX
SGC
XXXX
SG8
XXXX
SGM
4056-10.5YPS8
XXXXX
PACKING
OPTION
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 2500
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 2500
NOTE: XXXX = Date Code. XXXXX = Date Code and Vendor Code.
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
VIN to GND ........................................................ -0.3V to 30V
PPR
,
CHG
,
EN
, IMIN, IREF, BAT to GND ....... -0.3V to 6V
Storage Temperature Range ........................ -65℃ to +150℃
Package Thermal Resistance
TDFN-3×3-8L,
θ
JA
...................................................... 84℃/W
TDFN-2×3-8L,
θ
JA
.................................................... 110℃/W
TDFN-2×2-8L,
θ
JA
.................................................... 118℃/W
SOIC-8
(Exposed Pad), θ
JA
....................................... 58℃/W
Junction Temperature .................................................+150℃
Lead Temperature (Soldering 10 sec) ........................+260℃
ESD Susceptibility
HBM ............................................................................. 4000V
MM ................................................................................. 200V
CDM ............................................................................ 1000V
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed may cause permanent damage
to the device. Functional operation of the device at these or
any other conditions beyond those indicated in the operational
section of the specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
reliability.
OVERSTRESS CAUTION
ESD SENSITIVITY CAUTION
RECOMMENDED OPERATING CONDITIONS
Operating Temperature Range ....................... -40℃ to +85℃
This integrated circuit can be damaged by ESD if you don’t
pay attention to ESD protection. SGMICRO recommends that
all integrated circuits be handled with appropriate precautions.
Failure to observe proper handling and installation procedures
can cause damage. ESD damage can range from subtle
performance degradation to complete device failure. Precision
integrated circuits may be more susceptible to damage
because very small parametric changes could cause the
device not to meet its published specifications.
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, specification or other related things if necessary
without notice at any time.
SG Micro Corp
www.sg-micro.com
OCTOBER 2017
2
SGM4056
PIN CONFIGURATIONS
(TOP VIEW)
High Input Voltage Charger
(TOP VIEW)
8
7
6
5
VIN
PPR
CHG
EN
1
2
3
4
BAT
IREF
IMIN
GND
VIN
PPR
CHG
EN
1
2
3
4
8
7
6
5
BAT
IREF
IMIN
GND
SOIC-8 (Exposed Pad)
GND
TDFN-3×3-8L/TDFN-2×3-8L/TDFN-2×2-8L
GND
PIN DESCRIPTION
PIN
1
NAME
VIN
FUNCTION
Power Input. The absolute maximum input voltage is 26.5V. A 1μF
or larger value X5R ceramic
capacitor is recommended to be placed very close to the input pin for decoupling purpose. Additional
capacitance may be required to provide a stable input voltage.
Open-drain Power Presence Indication. The open-drain MOSFET turns on when the input voltage is
above the POR threshold but below the OVP threshold and off otherwise. This pin is capable to sink
15mA (MIN) current to drive an LED. The maximum voltage rating for this pin is 5.5V. This pin is
independent on the
EN
pin input.
Open-drain Charge Indication. This pin outputs a logic low when a charge cycle starts and turns to high
impedance when the end-of-charge (EOC) condition is qualified. This pin is capable to sink 15mA (MIN)
current to drive an LED. When the charger is disabled, the
CHG
pin outputs high impedance.
Enable Input. This is a logic input pin to disable or enable the charger. Drive to high to disable the
charger. When this pin is driven to low or left floating, the charger is enabled. This pin has an internal
200kΩ pull-down
resistor.
System Ground.
End-of-Charge (EOC) Current Programming Pin. Connect a resistor between this pin and the GND pin
to set the EOC current. The EOC current I
MIN
can be programmed by the following equation:
2
PPR
3
4
5
CHG
EN
GND
6
IMIN
=
I
MIN
where R
IMIN
is in kΩ. The programmable range covers 5% (or 10mA, whichever is higher) to 50% of
IREF. When programmed to less than 5% or 10mA, the stability is not guaranteed.
Charge-Current Programming and Monitoring Pin. Connect a resistor between this pin and the GND pin
to set the charge current limit determined by the following equation:
7
IREF
10070
−
0.5
(mA)
R
IMIN
=
I
REF
8
BAT
where R
IREF
is in kΩ. The resistor should be located very close to this pin. The
IREF pin voltage also
monitors the actual charge current during the entire charge cycle, including the trickle, constant-current,
and constant-voltage phases. When disabled, V
IREF
= 0V.
Charger Output Pin. Connect this pin to the battery. A 1μF or larger X5R ceramic capacitor is
recommended for decoupling and stability purposes. When the
EN
pin is pulled to logic high, the BAT
output is disabled.
12080
−
4
(mA)
R
IREF
SG Micro Corp
www.sg-micro.com
OCTOBER 2017
3
SGM4056
ELECTRICAL CHARACTERISTICS
PARAMETER
Maximum Supply Voltage
Operating
Supply Voltage
SGM4056-6.8
SGM4056-10.5
SYMBOL
RECOMMENDED OPERATING CONDITIONS
High Input Voltage Charger
(V
IN
= 5V, R
IMIN
= 243kΩ, T
A
= +25℃, unless otherwise noted.)
CONDITIONS
MIN
TYP
MAX
26.5
4.55
4.55
100
V
POR
V
POR
V
OS
V
OS
SGM4056-6.8
SGM4056-10.5
SGM4056-6.8
SGM4056-10.5
3.21
2.86
3.95
3.60
110
5
6.10
V
BAT
= 4.3V, R
IREF
= 120kΩ,
use
PPR
to indicate the comparator output.
9.35
140
245
Charger disabled or the input is floating
V
BAT
= 4.3V, R
IREF
= 24.3kΩ, charger disabled
V
BAT
= 4.3V, R
IREF
= 24.3kΩ, charger enabled
R
IREF
= 24.3kΩ, 4.55V
< V
IN
< 6.10V,
charge current = 20mA
R
IREF
= 24.3kΩ, 4.55V
< V
IN
< 9.35V,
charge current = 20mA
V
BAT
= 3.8V, charge current = 500mA,
R
IREF
= 10kΩ
V
BAT
= 3.8V, R
IREF
= 120kΩ
R
IREF
= 24.3kΩ, V
BAT
= 2.8V to 3.8V
R
IREF
= 24.3kΩ, V
BAT
= 2.4V
R
IREF
= 24.3kΩ
R
IREF
= 24.3kΩ
1.162
440
55
20
315
200
270
60
6.80
10.50
220
340
7.26
11.15
300
430
1
275
320
6.10
9.35
900
4.55
4.35
200
UNITS
V
V
mA
V
V
mV
mV
Programmed Charge Current
POWER-ON RESET
Rising POR Threshold
Falling POR Threshold
VIN-BAT OFFSET VOLTAGE
Rising Edge
Falling Edge
OVER-VOLTAGE PROTECTION
Over-Voltage
Protection Threshold
OVP Threshold
Hysteresis
STANDBY CURRENT
BAT Pin Sink Current
VIN Pin Supply Current
VIN Pin Supply Current
VOLTAGE REGULATION
I
STANDBY
I
VIN
I
VIN
V
OVP
V
OVPHYS
V
BAT
= 4.5V, R
IREF
= 120kΩ,
use
PPR
pin to
indicate the comparator output.
(1)
V
BAT
= 3.0V, R
IREF
= 120kΩ,
use
PPR
to indicate the comparator output.
V
mV
μA
μA
μA
4.152
4.152
4.2
4.2
0.7
4.248
V
4.248
Ω
Output Voltage
V
CH
PMOS On Resistance
CHARGE CURRENT
(2)
IREF Pin Output Voltage
Constant Charge Current
Trickle Charge Current
End-of-Charge Current
EOC Rising Threshold
R
DS (ON)
V
IREF
I
REF
I
TRK
I
MIN
1.215
500
90
40
370
1.262
560
135
75
435
V
mA
mA
mA
mA
PRECONDITIONING CHARGE THRESHOLD
Preconditioning Charge
Threshold Voltage
Preconditioning Voltage Hysteresis
V
MIN
V
MINHYS
R
IREF
= 24.3kΩ
R
IREF
= 24.3kΩ
2.46
20
2.55
100
2.65
190
V
mV
NOTES:
1. The 4.5V V
BAT
is selected so that the
PPR
output can be used as the indication for the offset comparator output indication. If
the V
BAT
is lower than the POR threshold, no output pin can be used for indication.
2. The charge current can be affected by the thermal foldback function if the IC under the test setup cannot dissipate the heat.
SG Micro Corp
www.sg-micro.com
OCTOBER 2017
4
SGM4056
(V
IN
= 5V, R
IMIN
= 243kΩ, T
A
= +25℃, unless otherwise noted.)
PARAMETER
Charge Current Foldback Threshold
LOGIC INPUT AND OUTPUTS
EN
Pin Logic Input High
EN
Pin Logic Input Low
EN
Pin Internal Pull Down Resistance
CHG
Sink Current when LOW
High Input Voltage Charger
ELECTRICAL CHARACTERISTICS (continued)
SYMBOL
T
FOLD
1.5
0.8
150
Pin Voltage = 1V
V
CHG
= 5.5V
Pin Voltage = 1V
V
PPR
= 5.5V
15
24
4.5
15
200
24
4.5
250
CONDITIONS
MIN
TYP
115
MAX
UNITS
℃
V
V
kΩ
mA
μA
mA
μA
INTERNAL TEMPERATURE MONITORING
Impedance
CHG
Leakage Current when High
PPR
Sink Current when LOW
PPR
Leakage Current when High
Impedance
SG Micro Corp
www.sg-micro.com
OCTOBER 2017
5
Analog electronics
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