參數(shù)資料
型號(hào)： LTC1760CFW
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： Dual Smart Battery System Manager
中文描述： 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO48
封裝： 6.10 MM, PLASTIC, TSSOP-48
文件頁數(shù)： 9/44頁
文件大小： 379K
代理商： LTC1760CFW
LTC1760
9
sn1760 1760is
BOOST (Pin 43):
Supply to Topside Floating Driver. The
bootstrap capacitor is returned to this pin. Voltage swing
at this pin is from a diode drop below V
CC
to (DCIN + V
CC
).
TGATE (Pin 44):
Drives the Gate of the Top External
MOSFET of the Battery Charger Buck Converter.
SCH1 (Pin 45), SCH2 (Pin 48):
Charger MUX Switch
Source Returns. These two pins are connected to the
sources of Q3/Q4 and Q9/Q10 (see Typical Applications).
A small pull-down current source returns these nodes to
0V when the switches are turned off.
GCH1 (Pin 46), GCH2 (Pin 47):
Charger MUX Switch Gate
Drives. These two pins drive the gates of the back-to-back
N-channel switch pairs, Q3/Q4 and Q9/Q10, between the
charger output and the two batteries (see Typical Applica-
tions)
External Power Supply Pins
V
PLUS
(Pin 1):
Supply. The V
PLUS
pin is connected via
four internal diodes to the DCIN, SCN, BAT1, and BAT2
pins. Bypass this pin with a 0.1
μ
F capacitor and a 1
μ
F
capacitor. See Typical Applications for complete circuit.
BAT1 (Pin 3), BAT2 (Pin 2):
These two pins are the inputs
from the two batteries for power to the LTC1760.
LOPWR (Pin 12):
LOPWR Comparator Input from Exter-
nal Resistor Divider Connected from SCN to GND. If the
voltage at LOPWR pin is lower than the LOPWR com-
parator threshold, then system power has failed and
power is autonomously switched to a higher voltage
source, if available.
DCDIV (Pin 16):
DCDIV Comparator Input from External
Resistor Divider Connected from DCIN to GND. If the
voltage at DCDIV pin is above the DCDIV comparator
threshold, then the AC_PRESENT bit is set and the wall
adapter power is considered to be adequate to charge the
batteries. If DCDIV is taken more than 1.8V above V
CC
,
then all of the power path switches are latched off until all
power is removed.
DCIN (Pin 41):
Supply. External DC power source. A
0.1
μ
F bypass capacitor must be connected to this pin as
close as possible. No series resistance is allowed, since
the adapter current limit comparator input is also this pin.
PIU
Battery Charging Related
V
SET
(Pin 13):
The Tap Point of a Programmable Resistor
Divider which Provides Battery Voltage Feedback to the
Charger. A capacitor from CSN to V
SET
and one from V
SET
to GND provide necessary compensation and filtering for
the voltage loop.
I
TH
(Pin 14):
This is the Control Signal of the Inner Loop
of the Current Mode PWM. Higher I
TH
corresponds to
higher charging current in normal operation. A capacitor
of at least 0.1
μ
F to GND filters out PWM ripple. Typical full-
scale output current is 30
μ
A. Nominal voltage range for
this pin is 0V to 2.4V.
I
SET
(Pin 15):
A Capacitor from I
SET
to GND is Required to
Filter Higher Frequency Components from the Delta-Sigma
IDAC.
I
LIMIT
(Pin 32):
An external resistor (R
ILIMIT
) is connected
between this pin and GND. The value of the external
resistor programs the range and resolution of the pro-
grammed charger current.
V
LIMIT
(Pin 33):
An external resistor (R
VLIMIT
)is connected
between this pin and GND. The value of the external
resistor programs the range and resolution of the voltage
DAC.
CSN (Pin 34):
Current Amplifier CA1 Input. Connect this to
the common output of the charger MUX switches.
CSP (Pin 35):
Current Amplifier CA1 Input. This pin and
the CSN pin measure the voltage across the sense resistor,
R
SENSE
, to provide the instantaneous current signals re-
quired for both peak and average current mode operation.
COMP1 (Pin 37):
This is the Compensation Node for the
Amplifier CL1. A capacitor is required from this pin to
GND if input current amplifier CL1 is used. At input
adapter current limit, this node rises to 1V. By forcing
COMP1 to GND, amplifier CL1 will be defeated (no
adapter current limit). COMP1 can source 10
μ
A.
BGATE (Pin 39):
Drives the Gate of the Bottom External
MOSFET of the Battery Charger Buck Converter.
SW (Pin 42):
Connected to Source of Top External MOSFET
Switch. Used as reference for top gate driver.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1760CFW#PBF 功能描述:IC MANAGER BATTERY DUAL 48TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標(biāo)準(zhǔn)包裝:4,000 系列:- 功能:燃料，電量檢測(cè)計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2
LTC1760CFW#PBF 制造商:Linear Technology 功能描述:Battery Management IC 制造商:Linear Technology 功能描述:IC, BATTERY CHARGER, 4.28A, TSSOP-48
LTC1760CFW#TR 功能描述:IC MANAGER BATTERY SYS 48-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR)
LTC1760CFW#TRPBF 功能描述:IC MANAGER BATTERY DUAL 48TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:電池監(jiān)控器 電池化學(xué):堿性，鋰離子，鎳鎘，鎳金屬氫化物 電源電壓:1 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:帶卷 (TR)
LTC1760CFWPBF 制造商:Linear Technology 功能描述:Dual Smart Battery Sys. Manager TSSOP48
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