KIT34673EPEVBE Freescale Semiconductor, KIT34673EPEVBE Datasheet

KIT EVALUATION FOR MC34673

KIT34673EPEVBE

Manufacturer Part Number
KIT34673EPEVBE
Description
KIT EVALUATION FOR MC34673
Manufacturer
Freescale Semiconductor
Type
Battery Managementr
Datasheets

Specifications of KIT34673EPEVBE

Main Purpose
Power Management, Battery Charger
Embedded
No
Utilized Ic / Part
MC34673
Primary Attributes
1 Cell- Li-Ion
Secondary Attributes
LED Status Indicators
Input Voltage
2.6 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Product
Power Management Modules
Supply Current
1.2 A
Silicon Manufacturer
Freescale
Silicon Core Number
MC34673
Kit Application Type
Power Management - Battery
Application Sub Type
Battery Charger
Kit Contents
Evaluation Board, CD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
MC34673
Freescale Semiconductor
Advance Information
* This document contains certain information on a new product.
© Freescale Semiconductor, Inc., 2007-8. All rights reserved.
High Input Voltage 1.2A Charger
for Single-cell Li-Ion Batteries
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 PDAs, cell phones, portable video game players and
digital still cameras.
constant-voltage (CV) charge modes. The CC-mode current is
programmable up to 1.2A 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 a -20°C
to 70°C temperature range. The trickle-mode current is preset 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
current when the IC internal temperature rises to a preset threshold.
The MC34673 also protects the system with its input over-voltage
protection (OVP) feature. In addition, the MC34673 has a 2.6V falling
power-on-reset (POR) threshold, making it perfect to work with current
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
Specifications and information herein are subject to change without notice.
The MC34673 is a cost-effective fully-integrated battery charger for
A typical charge cycle includes trickle, constant-current (CC) and
• No external MOSFET, reverse-blocking diode or current-sense resistor are required
• Guaranteed maximum 1.2A programmable CC-mode current
• ±0.7% voltage accuracy over -20°C to 70°C
• ±6% current accuracy over -40°C to 85°C
• 28V maximum voltage for the power input with 6.8V 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
V
IN
Figure 1. 34673 Simplified Application Diagram
ON
C
IN
OFF
PPR
EN
GND
CHG
VIN
34673
FAST
ISET
BAT
MC34673AEP/R2
R
Device
ISET
V
C
IO
ORDERING INFORMATION
OUT
POWER MANAGEMENT IC
EP SUFFIX (PB-FREE)
TO BATTERY
TO MCU
98ASA10774D
34673
8-PIN UDFN
Document Number: MC34673
Temperature
-40°C to 85°C
Range (T
A
)
Rev. 1.0, 01/2008
Package
8-UDFN

Related parts for KIT34673EPEVBE

KIT34673EPEVBE Summary of contents

Page 1

... Pb-free packaging designated by suffix code Figure 1. 34673 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. Device MC34673AEP/R2 34673 VIN BAT ...

Page 2

... Figure 2. 34673 Simplified Internal Block Diagram 34673 2 INTERNAL BLOCK DIAGRAM – Internal + Supply V REF Charge Control REF – REF VIN + – + Die – Temp – BAT 110° Logic Control – GND BAT ISET I EOC FAST Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 3

... GND Ground 6 FAST Output 7 ISET Output 8 BAT Output EPAD EPAD N/A Analog Integrated Circuit Device Data Freescale Semiconductor PIN CONNECTIONS EPAD Figure 3. 34673 Pin Connections Formal Name The supply input. Input supply Indication of the input power status. Open drain output. Power present indicator Indication of the charge status ...

Page 4

... V , -0.3 to 5.5 BAT , V FAST ±2000 V ESD ±200 T - -40 to 150 J T -65 to +150 STG R 10 θ θJA Note 4 T PPRT = 100pF 1500Ω), and the Machine Model ZAP Analog Integrated Circuit Device Data Freescale Semiconductor Unit V V °C °C °C/W °C ...

Page 5

... Notes 5. Refer to the Power-on-Reset parameter for V 6. Supply current does not include the current delivered to the battery through the BAT pin. 7. Not tested. Guaranteed by design. Analog Integrated Circuit Device Data Freescale Semiconductor = 5.0V, -40°C ≤ T ≤ 85°C, C =1µ 5.0V and T ...

Page 6

... LIMIT = 2.2µF (see Figure 1), unless otherwise OUT = 25°C under nominal conditions, A Min Typ Max Unit 2.6 2.7 2 100 150 mV 4.060 4.100 4.140 1 0.5 V µA - 2.0 7 µ 1 µ 1.0 95 110 125 °C Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 7

... Characteristics noted under conditions V noted. Typical values noted reflect the approximate parameter means at V unless otherwise noted. Characteristic END OF CHARGE EOC Filter Time OSCILLATOR Oscillation Frequency Analog Integrated Circuit Device Data Freescale Semiconductor = 5.0V, -40°C ≤ T ≤ 85°C, C =1µ 5.0V and T IN ...

Page 8

... BAT A R =3.23 k Ω ISET Ω R =6.57 k ISET R =13.3 k Ω ISET 4.0 4.5 5.0 5.5 6 2.0V 25°C BAT A 4.8 5.2 5.6 6.0 6.4 V (V) IN Figure ISET 3.9V 25°C BAT A Analog Integrated Circuit Device Data Freescale Semiconductor 6.5 6.5 6.8 ...

Page 9

... Temperature Figure 12 Temperature BAT V = 5.0V 0mA IN BAT Analog Integrated Circuit Device Data Freescale Semiconductor 1200 Ω R =3.23 k ISET 1000 800 600 400 200 0 -40 Figure 13. Constant Charge Current vs Temperature 250 R =3.23 k Ω ISET 200 150 R =6 ...

Page 10

... Figure 18. BAT Pin Supply Current vs Temperature V = 5.0V, VIN Not Powered or Charger Disabled = 250mA BAT 2000 1750 1500 1250 1000 750 500 250 0 - Figure 19. VIN Pin Supply Current vs Temperature - Temperature Charger Enabled Charger Disabled - Temperature 5.0V IN Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 11

... Ground. FAST CHARGE INDICATOR (FAST) When charging, this open-drain logic output indicates whether or not the battery voltage is higher than the trickle- Analog Integrated Circuit Device Data Freescale Semiconductor FUNCTIONAL DESCRIPTION INTRODUCTION The CC-mode current can be programmed with an external resistor (R proportional to the charge current, so the system can monitor the charge current during the whole charge cycle ...

Page 12

... DIE TEMPERATURE FEEDBACK The die temperature feedback block monitors the die temperature. Once the die temperature reaches the threshold temperature, the charge-control block can reduce the charge current to prevent further die temperature rise. Power MOSFET MOSFET Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 13

... The logic control block determines the on and off of the charger. It takes the signals from the VIN Monitor, VIN-BAT Comparator, EOC, and the external enable signal, and Analog Integrated Circuit Device Data Freescale Semiconductor FUNCTIONAL DESCRIPTION FUNCTIONAL INTERNAL BLOCK DESCRIPTION determines the on and off states as well as the charge status indication outputs of the charger (CHG, PPR, and FAST) ...

Page 14

... ISET where R is the resistor between the ISET pin and the ISET ground in Ω. In addition, the current out of the ISET pin is proportional to the charge current. The system may measure TIME TIME TIME equ. 2 Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 15

... Whenever the EN pin is driven to a high logic voltage, the charger is disabled. Analog Integrated Circuit Device Data Freescale Semiconductor INPUT POWER PRESENCE INDICATOR When V is applied and the voltage is above the power-on- IN reset voltage threshold (V voltage to indicate the input power presence ...

Page 16

... Charger: OFF EN=low and V <V IN OVP and V > BAT OS TRICKLE CHARGE Charger: ON > 2.7V V =4.2V BAT and I < I BAT EOC CHARGE COMPLETE Charger: ON Figure 22. Charge Cycle State Diagram PWR OFF V <V IN POR V < 2.7V BAT Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 17

... Input GREEN RED 470 470 Analog Integrated Circuit Device Data Freescale Semiconductor TYPICAL APPLICATIONS INTRODUCTION DROPOUT VOLTAGE If the DC input voltage is too low, it may not maintain the programmed CC-mode charge current due to the voltage dropout over the power MOSFET. The worst case of the R is 475mΩ ...

Page 18

... ISET pin. Figure 24 BAT VIN 2.2µF GND ISET CHG PPR FAST EN OFF ON Figure 24. MCU Interfaced Charger is the typical application circuit. V Li+ IO 100kx3 MCU Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 19

... For the most current package revision, visit www.freescale.com and perform a keyword search using the “98A” listed below. Analog Integrated Circuit Device Data Freescale Semiconductor PACKAGE DIMENSIONS EP SUFFIX 8-PIN 98ASA10774D REVISION 0 TYPICAL APPLICATIONS PACKAGE DIMENSIONS 34673 19 ...

Page 20

... TYPICAL APPLICATIONS PACKAGE DIMENSIONS 34673 20 EP SUFFIX 8-PIN 98ASA10774D REVISION 0 Analog Integrated Circuit Device Data Freescale Semiconductor ...

Page 21

... REVISION DATE DESCRIPTION OF CHANGES 1/2008 • Initial Release 1.0 Analog Integrated Circuit Device Data Freescale Semiconductor REVISION HISTORY REVISION HISTORY 34673 21 ...

Page 22

... Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer ...

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