DS2720BU+ datasheet, PDF - EEWORLD Datasheet

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DS2720BU+: DescriptionIC lith battery protect 8-usop; CategoryPower/power management The power supply circuit; File Size168KB，21 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

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DS2720BU+ Overview

IC lith battery protect 8-usop

DS2720BU+ Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Maxim
Parts packaging code	SOIC
package instruction	TSSOP, TSSOP8,.19
Contacts	8
Reach Compliance Code	compli
ECCN code	EAR99
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	S-PDSO-G8
JESD-609 code	e3
length	3 mm
Humidity sensitivity level	1
Number of channels	1
Number of functions	1
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP8,.19
Package shape	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
power supply	3/5 V
Certification status	Not Qualified
Maximum seat height	1.1 mm
Maximum supply current (Isup)	0.025 mA
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	2.5 V
Nominal supply voltage (Vsup)	3.6 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	3 mm

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DS2720

Efficient, Addressable Single-Cell

Rechargeable Lithium Protection IC

www.maxim-ic.com

FEATURES

Rechargeable Lithium-Ion (Li+) Safety

Circuit

- Overvoltage Protection

- Overcurrent/Short-Circuit Protection

- Undervoltage Protection

- Overtemperature Protection

Controls High-Side N-Channel Power

MOSFETs Driven from 9V Charge Pump

System Power Management and Control

Feature Support

Eight Bytes of Lockable EEPROM

Dallas 1-Wire

Interface with Unique 64-Bit

Device Address

8-Pin

mSOP

Package

Low Power Consumption:

- Active Current: 12.5mA typ

- Sleep Current:

1.5mA typ

PIN CONFIGURATION

PLS

DS2720U

mSOP

PIN DESCRIPTION

PLS -

DQ -

CP -

CC -

DC -

Battery-Pack Positive Terminal Input

Power-Switch Sense Input

Data Input/Output

Device Ground

Power-Supply Input

Reservoir Capacitor

Charge Control Output

Discharge Control Output

DESCRIPTION

The DS2720 single-cell rechargeable Li+ protection IC provides electronic safety functions required for

rechargeable Li+ applications including protecting the battery during charge, protection of the circuit

from damage during periods of excess current flow and maximization of battery life by limiting the level

of cell depletion. Protection is facilitated by electronically disconnecting the charge and discharge

conduction path with switching devices such as low-cost N-channel power MOSFETs.

Since the DS2720 provides high-side drive to external N-channel protection MOSFETs from a 9V charge

pump, superior on-resistance performance results compared to common low-side protector circuits using

the same FETs. The FET on-resistance actually decreases as the battery discharges.

Adding to the uniqueness of the DS2720 is the ability of the system to control the FETs from either the

data interface or a dedicated input thereby eliminating the power-switch control redundancy of

rechargeable Li+ battery systems.

Through its 1-Wire interface, the DS2720 gives the host system read/write access to status and control

registers, instrumentation registers, and general-purpose data storage. Each device has a factory-

programmed 64-bit net address that allows it to be individually addressed by the host system.

1-Wire is a registered trademark of Dallas Semiconductor.

1 of 21

080205

DS2720BU+ Related Products

	DS2720BU+	DS2720AU+	DS2720AU+T&R	DS2720CU+T&R	DS2720AU+T&R;	DS2720BU+T&R;	DS2720CU+T&R;
Description	IC lith battery protect 8-usop	IC lith battery protect 8-usop	IC lith battery protect 8-usop	IC lith battery protect 8-usop	IC LITH BATTERY PROTECT 8-USOP	IC LITH BATTERY PROTECT 8-USOP	IC LITH BATTERY PROTECT 8-USOP
Is it Rohs certified?	conform to	conform to	conform to	conform to	-	-	-
Maker	Maxim	Maxim	Maxim	Maxim	-	-	-
Parts packaging code	SOIC	SOIC	SOIC	SOIC	-	-	-
package instruction	TSSOP, TSSOP8,.19	TSSOP, TSSOP8,.19	TSSOP, TSSOP8,.19	TSSOP, TSSOP8,.19	-	-	-
Contacts	8	8	8	8	-	-	-
Reach Compliance Code	compli	compli	compli	compli	-	-	-
ECCN code	EAR99	EAR99	EAR99	EAR99	-	-	-
Adjustable threshold	NO	NO	NO	NO	-	-	-
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT	-	-	-
JESD-30 code	S-PDSO-G8	S-PDSO-G8	S-PDSO-G8	S-PDSO-G8	-	-	-
JESD-609 code	e3	e3	e3	e3	-	-	-
length	3 mm	3 mm	3 mm	3 mm	-	-	-
Humidity sensitivity level	1	1	1	1	-	-	-
Number of channels	1	1	1	1	-	-	-
Number of functions	1	1	1	1	-	-	-
Number of terminals	8	8	8	8	-	-	-
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C	-	-	-
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-	-	-
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-	-	-
encapsulated code	TSSOP	TSSOP	TSSOP	TSSOP	-	-	-
Encapsulate equivalent code	TSSOP8,.19	TSSOP8,.19	TSSOP8,.19	TSSOP8,.19	-	-	-
Package shape	SQUARE	SQUARE	SQUARE	SQUARE	-	-	-
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	-	-	-
Peak Reflow Temperature (Celsius)	260	260	260	260	-	-	-
power supply	3/5 V	3/5 V	3/5 V	3/5 V	-	-	-
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	-	-	-
Maximum seat height	1.1 mm	1.1 mm	1.1 mm	1.1 mm	-	-	-
Maximum supply current (Isup)	0.025 mA	0.025 mA	0.025 mA	0.025 mA	-	-	-
Maximum supply voltage (Vsup)	5.5 V	5.5 V	5.5 V	5.5 V	-	-	-
Minimum supply voltage (Vsup)	2.5 V	2.5 V	2.5 V	2.5 V	-	-	-
Nominal supply voltage (Vsup)	3.6 V	3.6 V	3.6 V	3.6 V	-	-	-
surface mount	YES	YES	YES	YES	-	-	-
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	-	-	-
Terminal surface	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	-	-	-
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	-	-	-
Terminal pitch	0.65 mm	0.65 mm	0.65 mm	0.65 mm	-	-	-
Terminal location	DUAL	DUAL	DUAL	DUAL	-	-	-
Maximum time at peak reflow temperature	30	30	30	30	-	-	-
width	3 mm	3 mm	3 mm	3 mm	-	-	-

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