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BD8668GW Schematic ( PDF Datasheet ) - ROHM Semiconductor

Teilenummer BD8668GW
Beschreibung Boost DC/DC Charger
Hersteller ROHM Semiconductor
Logo ROHM Semiconductor Logo 




Gesamt 30 Seiten
BD8668GW Datasheet, Funktion
Datasheet
Battery Charger IC Series
Boost DC/DC Charger
With Input Current Limiter
BD8664GW BD8665GW BD8668GW
General Description
BD8664GW, BD8665GW and BD8668GW are lithium-ion
battery charger IC’s, suitable for charging 2S batteries
from a 5V source, such as a USB port with DC/DC boost
topology.
Features
CP/CV Charging
Charge-On/ Off control available with EN pin
Integrated Input Detection (VBUSOK)
Integrated Power Good
Boost Switching Topology
Low Ron integrated MOSFET
Output Short Circuit Protection
0.4mm pitch Chip Scale Package (UCSP75M2)
Applications
DVC, DSC, MID and other Lithium battery-powered
portable devices
Key Specifications
Input Current Accuracy
±2%(BD8664GW)
±3%(BD8665GW/BD8668GW)
Charging Voltage Accuracy
±0.5%
Selectable Input Current
100mA/500mA/900mA/1500mA (max)
Charging frequency
1MHz (typ)
Input Standby Current
71µA(typ)
battery leakage current while charging is off 0µA(typ)
Package
UCSP75M2
W(Typ) x D(Typ) x H(Max)
2.20mm x 2.20mm x 0.85mm
Line Up
Charge
Voltage
8.30V
8.40V
Package
USCP75M2
Pin
number
20
25
Orderable
Part Number
BD8664GW
BD8665GW
BD8668GW
Typical Application Circuit
VBUS+
D+
D-
OVP
BC1.2
Detector
SDA
SCL
HOST
VBUS
ICOMP
VCOMP
FSET
ISNS
VBUSLIM
SW1
EN BD8664GW
BD8665GW
ISETIN1 BD8668GW
ISETIN2
ISETIN3
SW2
ACLEN
PGOOD
VFB
VBUSOK
ISETOUT1
ISETOUT2
FSET
GND PGND
Controled by HOST
SYSTEM
BATTERY+
Figure 1. Typical Application
Circuit
Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
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BD8668GW Datasheet, Funktion
BD8664GW BD8665GW BD8668GW
Absolute Maximum Ratings (Ta=25°C)
Item
Symbol
Range
Unit
VBUS Voltage
VBUSLIM Voltage
VVBUS
VVBUSLIM
-0.3 to +7.0
-0.3 to VBUS+0.3 (Note 3)
V
V
VFB Voltage
SW1 Voltage
VVFB
VSW1
-0.3 to +13.0
-0.3 to VBUSLIM+0.3 (Note 4)
V
V
SW2 Voltage
Terminal Voltage 1 (Note 1)
Terminal Voltage 2 (Note 2)
Voltage Between Terminals (Note 5)
Maximum Power Dissipation (Note 6)
VSW2
VINOUT1
VINOUT2
VINOUT3
Pd
-0.3 to VFB+0.3
-0.3 to VBUS+0.3 (Note 3)
-0.3 to +6.0
-0.3 to +0.3
1.00
V
V
V
V
W
Operating Temperature
Topr -30 to +85
°C
Storage Temperature
Tstg -55 to +150
°C
Junction Temperature
Tjmax
+150
°C
(Note 1) ISNS, FSET, VBUSOK, PGOOD, VCOMP, ICOMP, ISETOUT1, ISETOUT2
(Note 2) ACLEN, EN, ISETIN1, ISETIN2, ISETIN3
(Note 3) 7.0V against GND
(Note 4) 7.0V against PGND
(Note 5) GND-PGND, VBUS-ISNS
(Note 6) When mounted on 54mm x 62mm PCB. Pd decreases by 8mW per 1°C when Ta is 25°C or higher.
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is
operated over the absolute maximum ratings.
Recommended Operating Conditions (Ta=-30 to +85°C)
Item Symbol
Min
Value
Typ
VBUS Voltage
VVBUS
4.1
5.0
VFB Voltage
VVFB
0.0
8.4
8.3
Unit
Max
Part No.
5.5 V
-
BD8665GW/BD8668GW
10.0 V
BD8664GW
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
6/32
TSZ02201-0A1A0AZ00130-1-2
15.Apr.2015 Rev.001

6 Page









BD8668GW pdf, datenblatt
BD8664GW BD8665GW BD8668GW
Typical Performance Curves - continue
(Unless otherwise specified, VVBUS=5.0V VVFB=7.4V VISETIN1,2,3=0V GND=PGND=0V Ta=25°C)
VVFB
2.0V/div.
IVBUS
0.5A/div.
VICOMP
0.5V/div.
5ms/div.
Figure 15. Changing Current
(1500mA to 100mA)
VEN
10V/div.
VVBUS
2.0V/div.
IVBUS
0.5A/div.
VISETOUT1
5.0V/div.
VISETOUT2
5.0V/div.
20ms/div.
Figure 16. Automatically Changing Current
(1500mA to 900mA)
VEN
10V/div.
VVBUS
2.0V/div.
IVBUS
0.5A/div.
VISETOUT1
5.0V/div.
VISETOUT2
5.0V/div.
20ms/div.
Figure 17. Automatically Changing Current
(900mA to 500mA)
VEN
10V/div.
VVBUS
2.0V/div.
IVBUS
0.5A/div.
VISETOUT1
5.0V/div.
VISETOUT2
5.0V/div.
20ms/div.
Figure 18. Automatically Changing Current
(500mA to 100mA)
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
12/32
TSZ02201-0A1A0AZ00130-1-2
15.Apr.2015 Rev.001

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