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EUP8218 데이터시트 PDF




Eutech Microelectronics에서 제조한 전자 부품 EUP8218은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 EUP8218 기능
기능 2A Single Cell Switchmode Li-Ion/Polymer Battery Charger
제조업체 Eutech Microelectronics
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EUP8218 데이터시트, 핀배열, 회로
Preliminary
EUP8218
2A Single Cell Switchmode Li-Ion/Polymer Battery Charger with
System Power-Path Selection and Automatic USB/Charger Detection
DESCRIPTION
The EUP8218 is a highly integrated single cell Li-ion and
Li-polymer battery charger. It integrates a constant-
frequency PWM controller with high accuracy regulation
of input current, charge current, and voltage. It also
provides battery detection, pre-conditioning, charge
termination, and charge status monitoring.
The EUP8218 provides power path selection function.
When the qualified adapter is present, the system is
powered by the adapter. Otherwise, the system is powered
by the battery. It also integrates an USB-
connection-monitoring device used to determine if a
standard USB device or a battery-charging device is
connected.
The EUP8218 charges the battery in three phases:
pre-conditioning, fast-charge constant current and constant
voltage. In all stages, an internal control loop monitors the
IC junction temperature and reduce charge current if the
internal temperature threshold (120°C) is exceeded.
Additionally, a battery pack thermistor monitoring input
(TS) is included that monitors battery temperature for
safety charging.
Charge is terminated when the current reaches 10% of the
fast charge rate. A programmable charge timer offers a
safety back up. The EUP8218 automatically restarts the
charge cycle if the battery voltage falls below an internal
threshold, and enters a low-quiescent current sleep mode
when the input voltage falls below the battery voltage.
The EUP8218 features Dynamic Power Management
(DPM) to reduce the charge current when the input power
limit is reached to avoid over-loading the adapter. A
highly-accurate current-sense amplifier enables precise
measurement of input current from adapter to monitor
overall system power.
The EUP8218 is available in a 28-pin, 4mm × 4mm TQFN
package.
FEATURES
4.5V-20V Input Operating Range
High Integration
- Automatic Power Path Selector Between
Adapter and Battery
- Automatic USB/Charger Detection
- Dynamic Power Management
- Integrated 20V High Side Switching MOSFET
Safety
- Thermal Regulation Loop Throttles Back
Current to Limit Tj=120°C
- Thermal Shutdown
- Battery Thermistor Sense Hot/Cold Charge
Suspend & Battery Detect
- Input Over-Voltage Protection with
Programmable Thereshold
Accuracy
- ±1% Charge Voltage Regulation
- ±10% Charge Current Regulation
- ±10% Input Current Regulation
Less than 25µA Battery Current with Adapter
Removed
Less than 5mA Input Current with Adapter Present
and Charge Disabled
4mm × 4mm TQFN-28 Package
RoHS Compliant and 100% Lead (Pb)-Free
Halogen-Free
APPLICATIONS
Mobile and Smart Phones
Tablet PC
Handheld Devices
DS8218 Ver 0.1 Mar. 2012
1




EUP8218 pdf, 반도체, 판매, 대치품
Pin Configurations
Package Type
TQFN-28
Preliminary
Pin Configurations
EUP8218
Pin Description
PIN TQFN-28
ACN
1
ACP
CMSRC
ACDRV
2
3
4
STAT
5
TS 6
TTC 7
VREF
8
D+ 9
D- 10
FLAG1
11
DS8218 Ver 0.1 Mar. 2012
I/O/P
I
P/I
O
O
O
I
O
P
I
I
O
DESCRIPTION
Adapter current sense resistor negative input. A 0.1µF ceramic capacitor is placed
from ACN to ACP to provide differential-mode filtering. An optional 0.1µF
ceramic capacitor is placed from ACN pin to AGND for common-mode filtering.
Adapter current sense resistor positive input. A 0.1µF ceramic capacitor is placed
from ACN to ACP to provide differential-mode filtering. A 0.1µF ceramic capacitor
is placed from ACP pin to AGND for common-mode filtering.
Connect to the source of N-channel RevFET. Place 4kresistor from CMSRC pin
to the source of RevFET to control the turn-on speed.
AC adapter to PVCC switch driver output. Connect to 4kresistor then to the gate
of the RevFET N-channel power MOSFET.
Open-drain charge status pin with 1.5kpull up to power rail. The STAT pin can
be used to drive LED or communicate with the host processor. It indicates various
charger operations: LOW when charge in progress. HIGH when charge is complete
or in SLEEP mode. Blinking at 0.5Hz when fault occurs, including charge suspend,
input over-voltage, timer fault and battery absent.
Temperature qualification voltage input. Connect a negative temperature coefficient
thermistor. Program the hot and cold temperature window with a resistor divider
from VREF to TS to AGND. The temperature qualification window can be set to
5-40°C or wider. The 103AT thermistor is recommended.
Safety Timer and termination control. Connect a capacitor from this node to AGND
to set the fast charge safety timer (5.6min/nF). Pre-charge timer is internally fixed to
30 minutes. Pull the TTC to LOW to disable the charge termination and safety
timer. Pull the TTC to HIGH to disable the safety timer but allow the charge
termination.
3.3V reference voltage output. Place a 1µF ceramic capacitor from VREF to AGND
pin close to the IC. This voltage could be used for programming ISET and ACSET
and TS pins. It may also serve as the pull-up rail of STAT pin and CELL pin.
D+ and D- Connections for USB Input Adapter Detection-When a charge cycle is
initiated by the USB input , and a short is detected between D+ and D- , the FLAG1
is low and the input current limit set by ACSET shall not change. If a short is not
detected, the FLAG1 is high and the input current limit is changed to the
predetermined USB2 or USB3 current limit.
Charger/standard USB device detect flag-When an USB charger is plugged in, the
FLAG1 is low. While a standard USB device is plugged in, the FLAG is high.
4

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EUP8218 전자부품, 판매, 대치품
Preliminary
EUP8218
Absolute Maximum Ratings (1)
PVCC, AVCC, ACP, ACN,ACDRV, CMSRC,BTST,SRP, SRN-------------------------------- -0.3V to 20V
SW -------------------------------------------------------------------------------------------------------- -2V to 20V
OVPSET, TS,TTC, CELL, COMP, D+,D-,FLAG1 ----------------------------------------------- -0.3V to 7V
VREF, ISET, ACSET, STAT ----------------------------------------------------------------------- -0.3V to 3.6V
PGND, AGND --------------------------------------------------------------------------------------- -0.3V to 0.3V
Maximum Difference Voltage, SRP-SRN, ACP-ACN ----------------------------------------- -0.5V to 0.5V
Package Thermal Resistance ,TQFN-28 ,θJA -----------------------------------------------------
40°C/W
Junction temperature range, TJ ------------------------------------------------------------------------- 150°C
Storage temperature range, Tstg ------------------------------------------------------------- -65°C to 150°C
Lead temperature (soldering, 10s) -------------------------------------------------------------------- 260°C
Recommended Operating Conditions (2)
Input voltage
Output voltage
Output current (RSR 10m)
Maximum difference voltage
Ambient Temperature Range , TA
VIN
VOUT
IOUT
ACP-ACN
SRP-SRN
Min.
4.5
0.5
-200
-200
-40
Max.
20
4.5
4
200
200
85
Unit
V
V
A
mV
mV
°C
Note (1): Stress beyond those listed under “Absolute Maximum Ratings” may damage the device.
Note (2): The device is not guaranteed to function outside the recommended operating conditions.
Electrical Characteristics
4.5V V(PVCC, AVCC) 20V, –40°C < TJ <+ 125°C, typical values are at TA = 25°C, with respect to AGND (unless
otherwise noted).
Symbol
Parameter
OPERATING CONDITIONS
VAVCC_OP
AVCC input voltage operating
range during charging
QUIESCENT CURRENTS
Conditions
EUP8218
Min. Typ. Max.
Unit
4.5 20 V
VAVCC > VUVLO, VSRN > VAVCC
(SLEEP), TJ = 0°C to 85°C
25
Battery discharge current
IBAT (sum of currents into
AVCC, PVCC, ACP, ACN)
Adapter supply current
IAC (sum of current into
AVCC,ACP, ACN)
DS8218 Ver 0.1 Mar. 2012
BTST, SW, SRP, SRN, VAVCC >
VUVLO, VAVCC > VSRN, ISET < 40mV,
VBAT=4.2V, Charge disabled
BTST, SW, SRP, SRN, VAVCC >
VUVLO, VAVCC > VSRN, ISET >
120mV, VBAT=4.2V, Charge done
VAVCC > VUVLO, VAVCC > VSRN,
ISET < 40mV, VBAT=4.2V, Charge
disabled
VAVCC > VUVLO, VAVCC > VSRN,
ISET > 120mV, Charge enabled,
no switching
VAVCC > VUVLO, VAVCC > VSRN,
ISET > 120mV, Charge enabled,
switching
7
25 µA
25
2.5 5
2.5 5 m A
15

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