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부품번호 34671 기능
기능 High Input Voltage 600mA Charger
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34671 데이터시트, 핀배열, 회로
www.DFatraSeheesetc4Ua.lceomSemiconductor
Advance Information
Document Number: MC34671
Rev. 1.0, 01/2008
High Input Voltage 600mA
Charger for Single-cell Li-Ion
Batteries
34671
The MC34671 is a cost-effective fully-integrated battery charger for
Li-Ion or Li-Polymer batteries. The high input voltage, up to 28V,
eliminates the input over-voltage-protection circuit required in
handheld devices such as cell phones, Bluetooth accessories and MP3
players.
POWER MANAGEMENT IC
A typical charge cycle includes trickle, constant-current (CC) and
constant-voltage (CV) charge modes. The CC-mode current is
programmable up to 600mA with an external resistor. The voltage
across the external resistor is also used to monitor the actual charge
current. The constant voltage is fixed at 4.2V with 0.7% accuracy over
EP SUFFIX (PB-FREE)
98ASA10774D
a -20°C to 70°C temperature range. The trickle-mode current is preset
8-PIN UDFN
to 20% of the CC-mode current when the battery voltage is lower than
the trickle-mode threshold. The end-of-charge (EOC) current threshold
is preset to 10% of the CC-mode current to save the board space and
cost. A charge current thermal foldback feature limits the charge
ORDERING INFORMATION
current when the IC internal temperature rises to a preset threshold.
The MC34671 also protects the system with its input over-voltage
protection (OVP) feature. In addition, the MC34671 has a 2.6V falling
power-on-reset (POR) threshold, making it perfect to work with current
Device
MC34671AEP/R2
Temperature
Range (TA)
-40°C to 85°C
Package
8-UDFN
limited power supplies. Three indication pins (PPR, CHG and FAST)
can be simply interfaced to a microprocessor or LEDs. When no power supply is connected, or when disabled, the charger draws
less than 1.0µA leakage current from the battery.
Features
• No external MOSFET, reverse-blocking diode or current-sense resistor are required
• Guaranteed maximum 600mA programmable CC-mode current
±0.7% voltage accuracy over -20°C to 70°C
±5% current accuracy over -40°C to 85°C
• 28V maximum voltage for the power input with 11V over-voltage protection threshold
• 2.6V minimum input operating voltage
• Trickle charge for fully discharged batteries
• Charge current monitor
• Charge current thermal foldback
• Pb-free packaging designated by suffix code EP
VIN
34671
VIN
CIN GND
BAT
COUT
TO BATTERY
OFF
ON
CHG
PPR
EN
ISET
FAST
RISET
VIO
TO MCU
Figure 1. 34671 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2007-8. All rights reserved.




34671 pdf, 반도체, 판매, 대치품
www.DaEtaLSEhCeTeRt4ICUA.cLomCHARACTERISTICS
MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
MAXIMUM RATINGS
Table 2. Maximum Ratings
All voltages are with respect to ground unless otherwise noted. Exceeding these ratings may cause a malfunction or
permanent damage to the device.
Ratings
Symbol
Value
Unit
ELECTRICAL RATINGS
Input Voltage Range
VIN Pin
PPR and CHG Pins
EN, BAT, ISET, and FAST Pins
ESD Voltage(1)
Human Body Model (HBM)
Machine Model (MM)
VIN
VPPR, VCHG
VEN, VBAT,
VISET, VFAST
VESD
-0.3 to 28
-0.3 to 12
-0.3 to 5.5
±2000
±200
V
V
THERMAL RATINGS
Operating Temperature
Ambient
Junction
Storage Temperature
Thermal Resistance(2)
Junction-to-Case
Junction-to-Ambient
Peak Package Reflow Temperature During Reflow(3),(4)
TA
TJ
TSTG
RθJC
RθJA
TPPRT
-40 to 85
-40 to 150
-65 to 150
10
70
Note 4
°C
°C
°C/W
°C
Notes
1. ESD testing is performed in accordance with the Human Body Model (HBM) (CZAP = 100pF, RZAP = 1500), and the Machine Model
(MM) (CZAP = 200pF, RZAP = 0).
2. Device mounted on the Freescale EVB test board per JEDEC DESD51-2.
3. Pin soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may
cause malfunction or permanent damage to the device.
4. Freescale’s Package Reflow capability meets Pb-free requirements for JEDEC standard J-STD-020C. For Peak Package Reflow
Temperature and Moisture Sensitivity Levels (MSL), Go to www.freescale.com, search by part number [e.g. remove prefixes/suffixes
and enter the core ID to view all orderable parts. (i.e. MC33xxxD enter 33xxx), and review parametrics.
34671
4
Analog Integrated Circuit Device Data
Freescale Semiconductor

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34671 전자부품, 판매, 대치품
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ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. Dynamic Electrical Characteristics
Characteristics noted under conditions VIN = 5.0V, -40°C TA 85°C, CIN = 1µF, COUT = 2.2µF (Figure 1), unless otherwise
noted. Typical values noted reflect the approximate parameter means at VIN = 5.0V and TA = 25°C under nominal conditions,
unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max Unit
END OF CHARGE
EOC Filter Time
OSCILLATOR
Oscillation Frequency
tEOC
fOSC
6.0
40.0
8.0
50.0
10
60.0
ms
kHz
Analog Integrated Circuit Device Data
Freescale Semiconductor
34671
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34671

High Input Voltage 600mA Charger

Freescale Semiconductor
Freescale Semiconductor

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