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Status
Part Number	Status
MAX1535	This product is Not Recommended for New Designs. See Ordering Information for recommended replacements.
MAX1535B	This product is Not Recommended for New Designs.
MAX1535C	This product is Not Recommended for New Designs.
MAX1535D	Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 532kB) Download   E-Mail

Description

The MAX1535B/MAX1535C/MAX1535D are highly integrated, multichemistry battery chargers that simplify construction of advanced smart chargers with a minimum number of external components. They use Intel's system management bus (SMBus™) to control the charge voltage, charge current, and the maximum current drawn from the AC adapter. High efficiency is achieved through use of a constant off-time step-down topology with synchronous rectification. In addition to support of the Smart-Battery-Charger Specifications Rev 1.1, the MAX1535B/MAX1535C/MAX1535D include additional features. The maximum current drawn from the AC adapter is programmable to avoid overloads when supplying the load and the battery charger simultaneously. This enables the user to reduce the cost of the AC adapter. The MAX1535B/MAX1535C/MAX1535D provide a digital output that indicates the presence of an AC adapter. Based on the presence or absence of the AC adapter, the MAX1535B/MAX1535C/MAX1535D automatically select the appropriate source for supplying power to the system by controlling two external p-channel MOSFETs. Under system control, the MAX1535B/MAX1535C/MAX1535D allow the battery to undergo a relearning or conditioning cycle in which the battery is completely discharged through the system load and then recharged. The MAX1535B/MAX1535C/MAX1535D are capable of charging 2, 3, or 4 lithium-ion (Li+) cells in series, providing charge currents as high as 8A. The DC-DC converter in the MAX1535B/MAX1535C/MAX1535D uses a high-side p-channel switch with an n-channel synchronous rectifier. The charge current and input current-limit sense amplifiers have low input-offset errors and can use small-value sense resistors (0.01Ω, typ). The MAX1535B/MAX1535C/MAX1535D are available in a 5mm x 5mm, 32-pin, thin QFN package and operate over the extended -40°C to +85°C temperature range. An evaluation kit is available to reduce design time.

An evaluation kit is available:  MAX1535DEVKIT   MAX1535BEVKIT  

Key Features		Applications/Uses
Compliant with Level 2 Smart-Battery-Charger Specifications Rev 1.1 Intel SMBus 2-Wire Serial Interface ±0.5% Charge-Voltage Accuracy 11-Bit Charge-Voltage Resolution ±3% Input Current-Limit Accuracy Use Small (10mΩ) Current-Sense Resistors 8A Maximum Charge Current 6-Bit Input and Charge-Current Resolution 8V to 28V Input Voltage Range 175s Charge Safety Timer Automatic Selection of System Power Source Charge Any Battery Chemistry (Li+, NiCd, NiMH, Lead Acid, etc.)		Notebook and Subnotebook Computers Portable Equipment with Rechargeable Batteries Tablet PCs

Diagram

Pin Configuration

Evaluation Kits

MAX1535DEVKIT MAX1535BEVKIT

Design Guides

Power Management for Battery-Powered Equipment (PDF)

Reliability Reports

Reliability Report: MAX1535.pdf Show FIT data for: MAX1535 Request Reliability Report for: MAX1535B MAX1535C MAX1535D

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-9 of 9

MAX1535	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1535ETJ			NRND	MAX8731AETI+	TQFN;32 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1535ETJ-T			NRND	MAX8731AETI+	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1535B	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1535BETJ			NRND	MAX8731AETI+	TQFN;32 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1535BETJ-T			NRND	MAX8731AETI+	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1535BETJ+			NRND	MAX8731AETI+	TQFN;32 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1535BETJ+T			NRND	MAX8731AETI+	TQFN;32 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1535C	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1535CETJ+			NRND	MAX8731AETI+	TQFN;32 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1535CETJ+T			NRND	MAX8731AETI+	TQFN;32 pin;26 mm² Outline Drawing: 21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1535D	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1535DEVSYS			Active		Land Pattern: Not Available	-40°C to +85°C	See data sheet

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