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USB Battery Charger Detectors

MAX14578E/MAX14578AE

EVALUATION KIT AVAILABLE

19-5821; Rev 3; 8/13

Ordering Information/Selector Guide

General Description

The MAX14578E/MAX14578AE are USB charger detec-

tors compliant with USB Battery Charging Revision 1.1.

The USB charger-detection circuitry detects USB stan-

dard downstream ports (SDPs), USB charging down-

stream ports (CDPs), or dedicated charger ports (DCPs),

and controlS an external lithium-ion (Li+) battery charger.

The devices implement USB Battery Charging Revision

1.1-compliant detection logic including data contact

detection, D+/D- short detection, charging downstream

port identification. The MAX14578AE features an enable

(EN) input and an LDO output.

In addition, the internal USB switch is compliant to

Hi-Speed USB, full-speed USB, and low-speed USB

signals. The devices feature low on-resistance, low

on-resistance flatness, and very low capacitance. The

devices also feature high-ESD protection up to Q15kV

Human Body Model on the CD+ and CD- pins.

In addition, the MAX14578E/MAX14578AE feature Apple

and Sony charger detection that allows identification of

resistor-divider networks on D+/D-.

The MAX14578E/MAX14578AE are available in 12-bump,

0.4mm pitch, 1.3mm x 1.68mm WLP and 16-pin TQFN

packages and operate over the -40NC to +85NC extended

temperature range.

Features

S Compliant to USB Battery Charging Revision 1.1

S Data Contact Detection for Foolproof Connector

Insertion Detection

S Charging Downstream Detection

S Apple/Sony Charger Detection

S Dedicated Charger Detection

S China YD/T1591-Compliant Charger Detection

S Internal Switches Isolate the USB Transceiver

During the Charger Detection Process

S V

BUS

Connection Capable of 28V

S Device Status Change Interrupt

S Low Supply Current

S High-ESD Protection on CD+ and CD-

±15kV Human Body Model

±8kV IEC 6100-4-2 Contact Discharge

Applications

DSC and Camcorder

Media Players

Cell Phones

e-Book Readers

Mobile Internet Devices (MIDs)

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed Pad

T = Tape and reel.

PART I

C EN LDO TEMP RANGE PIN-PACKAGE TOP MARK

MAX14578EEWC+T Yes No No -40NC to +85NC 12 WLP +ABW

MAX14578AEEWC+T No Yes Yes -40NC to +85NC 12 WLP +ABX

MAX14578AEETE+T Yes No No -40NC to +85NC 16 TQFN AJA

MAX14578AEETE+T No Yes Yes -40NC to +85NC 16 TQFN AJB

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

Summary of content (23 pages)

PAGE 1
EVALUATION KIT AVAILABLE MAX14578E/MAX14578AE USB Battery Charger Detectors General Description Features The MAX14578E/MAX14578AE are USB charger detectors compliant with USB Battery Charging Revision 1.1. The USB charger-detection circuitry detects USB standard downstream ports (SDPs), USB charging downstream ports (CDPs), or dedicated charger ports (DCPs), and controlS an external lithium-ion (Li+) battery charger. S Compliant to USB Battery Charging Revision 1.
PAGE 2
MAX14578E/MAX14578AE USB Battery Charger Detectors ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) BAT, INT, SDA, SCL, CE0, CE1, CE2, EN........... -0.3V to +6.0V LOUT............................................ -0.3V to (VB + 0.3V, 6V) (min) VB...........................................................................-0.3V to +30V Switch Disabled or CP_ENA = 1 (Note 1) CD+, CD-......................................... -2.1V to (VSWPOS + 0.3V) TD+, TD-..........................................
PAGE 3
MAX14578E/MAX14578AE USB Battery Charger Detectors ELECTRICAL CHARACTERISTICS (continued) (VBAT = +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VBAT = +3.6V, VB = +5.0V, TA = +25NC.) (Note 4) PARAMETER SYMBOL CONDITIONS MAX14578E BAT Supply Current IBAT TYP MAX VBAT = +3.6V, VB = 0V, CP_ENA = 0, USBSWC = 0 1 2.5 VBAT = +4.2V, VB = 0V, CP_ENA = 1, USBSWC = 1, VSDA = VSCL = 1.8V 34.5 59 1 2.5 VBAT = +4.2V, VB = 0V, VEN = 0V 1.
PAGE 4
MAX14578E/MAX14578AE USB Battery Charger Detectors ELECTRICAL CHARACTERISTICS (continued) (VBAT = +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VBAT = +3.6V, VB = +5.0V, TA = +25NC.) (Note 4) PARAMETER SYMBOL TD- Pulldown Resistor RTD-_DWN Charger Detection Weak Sink CONDITIONS MIN 14.
PAGE 5
MAX14578E/MAX14578AE USB Battery Charger Detectors ELECTRICAL CHARACTERISTICS (continued) (VBAT = +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VBAT = +3.6V, VB = +5.0V, TA = +25NC.) (Note 4) PARAMETER Open-Drain Low SYMBOL VODOL CONDITIONS MIN TYP ISINK = 1mA MAX UNITS 0.4 V VIO 0.
PAGE 6
MAX14578E/MAX14578AE USB Battery Charger Detectors Typical Operating Characteristics (VBAT = +4.2V, VB = +5.0V, CBAT = 1FF, CVB = 1FF, unless otherwise noted.) TA = +85°C 1.0 TA = -40°C TA = +25°C 0.5 8 6 TA = +85°C 4 TA = +25°C 50 2 MAX14578E toc03 VB = 0V, CP_ENA = 0, USBSWC = 0 VSDA = VSCL = 1.8V BAT SUPPLY CURRENT (µA) 1.5 10 BAT SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX14578E toc02 VB = 0V, CP_ENA = 0, USBSWC = 0 VSDA = VSCL = 0V BAT SUPPLY CURRENT (µA) BAT SUPPLY CURRENT (µA) 2.
PAGE 7
MAX14578E/MAX14578AE USB Battery Charger Detectors Typical Operating Characteristics (continued) (VBAT = +4.2V, VB = +5.0V, CBAT = 1FF, CVB = 1FF, unless otherwise noted.) CD+/CD- ON-RESISTANCE vs. VCD_ VOLTAGE 3 TA = +25°C 2 TA = -40°C 1 -20 OFF-ISOLATION -40 -60 0 0.5 1.0 1.5 2.0 2.5 1 0.01 3.0 30 ON-LEAKAGE 20 10 100 10,000 0 -40 FREQUENCY (MHz) VCD_ VOLTAGE (V) 10 1.5 60 85 MAX14578E toc14 VB 5V/div VIH VCD+ 0.5V/div 1.0 0.5 35 TEMPERATURE (°C) MAX14578E toc13 2.
PAGE 8
MAX14578E/MAX14578AE USB Battery Charger Detectors N.C. (LOUT_SNS) INT (LOUT) 12 11 10 9 TOP VIEW MAX14578E/MAX14578AE 4 A CD+ CD- VB INT (LOUT) B GND SCL (EN) SDA (CE0) CE1 TD- BAT CE2 SCL 14 (EN) MAX14578E MAX14578AE TD- 15 N.C. 16 WLP () MAX14578AE ONLY. () MAX14578AE ONLY. *CONNECT EP TO GND. EP* + 1 2 3 N.C. TD+ SDA 13 (CEO) 8 VB 7 BAT 6 CD- 5 GND 4 CD+ 3 N.C.
PAGE 9
MAX14578E/MAX14578AE USB Battery Charger Detectors PIN MAX14578E MAX14578AE NAME FUNCTION TQFN-EP WLP TQFN-EP WLP 14 B2 — — SCL I2C Serial-Clock Input. Connect SCL to an external pullup resistor. 15 C2 15 C2 TD- USB Transceiver D- Connection — — — — EP Exposed Pad (TQFN Only). EP is internally connected to GND. Connect to a large ground plane to maximize thermal performance. Not intended as an electrical connection point.
PAGE 10
MAX14578E/MAX14578AE USB Battery Charger Detectors MAX14578AE Functional Diagram/Typical Application Circuit BATTERY MAX14544 VCC ID USB TRANSCEIVER D- LOUT VB LDO 1µF 1µF MAX14578AE TD- D+ TD+ EN PROCESSOR CD- D- CD+ D+ ID USB CHARGER DETECTION EN VBUS MICRO-B USB CONNECTOR GND CONTROL LOGIC BAT 1µF CE2 CE1 CE0 GND AUDIO CODEC/ AMPLIFIER VIO VCC IUSB DCM USUS CHG SWITCH MODE CHARGER BATTERY 10 MAX8903/MAX8934 MAX8677 Maxim Integrated
PAGE 11
MAX14578E/MAX14578AE USB Battery Charger Detectors Table 1. Register Map ADDRESS NAME 0x00 DEVICE ID BIT 7 BIT 6 0x01 CONTROL 1 0x02 INTERRUPT 0x03 CONTROL 2 RFU RFU 0x04 CONTROL 3 RFU RFU BIT 5 BIT 4 BIT 3 BIT 2 VENDOR_ID INTPOL INTEN BIT 1 BIT 0 CHIP_REV USBSWC CP_ENA LOW_POW DCHK VBCOMP RFU DCD_T DB_IDLE SUS_LOW CE_FRC RFU CDP_DET USB_CPL CHG_TYP CHG_TYP_M USB_CHGDET CHGRUN RFU CE SFOUT_EN SFOUTASRT DCD_EXIT Table 2.
PAGE 12
MAX14578E/MAX14578AE USB Battery Charger Detectors Table 2. Detailed Register Map (continued) FIELD NAME USB_CHGDET READ/WRITE Read/Write BIT 0 DEFAULT 1 DESCRIPTION Charger-Detection-Enable Start. Charger detection starts with any change in VB.
PAGE 13
MAX14578E/MAX14578AE USB Battery Charger Detectors Table 2.
PAGE 14
MAX14578E/MAX14578AE USB Battery Charger Detectors Detailed Description The MAX14578E/MAX14578AE are USB charger detectors compliant with USB Battery Charging Revision 1.1. The USB charger-detection circuitry detects USB standard downstream ports (SDPs), USB charging downstream ports (CDPs), or dedicated charger ports (DCPs), and controls an external lithium-ion (Li+) battery charger. The MAX14578E features I2C communication, while the MAX14578AE features an EN pin and an LDO output pin.
PAGE 15
MAX14578E/MAX14578AE USB Battery Charger Detectors DORMANT CE_ = HI-Z VB < VVBDET MAX14578E: USB_CHGDET = 1 MAX14578AE: VEN = 0V VB < VVBDET DCD BEGIN DCD TEST DCD COMPLIANT NOT DCD COMPLIANT SPECIAL CHARGER SONY CHARGER TEST APPLE CHARGER TEST D+/D- SHORT TEST DCP/CDP TEST CHARGER CONFIGURATION (USB SWITCH CLOSED) CONFIGURE CE_ () MAX14578AE ONLY. VB < VVBDET Figure 1.
PAGE 16
MAX14578E/MAX14578AE USB Battery Charger Detectors STANDARD USB HOST CHARGING DOWNSTREAM PORT APPLE CHARGER SONY CHARGER DEDICATED CHARGER VLOAD PU 3.6V VBUS 5.0V VBUS 5.0V VBUS 5.0V ADPPU 75.0kΩ HLPU 300kΩ SDPPU 5.1kΩ D+ D+ D+ ADPPD 49.9kΩ HPD 14.25kΩ TO 24.8kΩ VLOAD PU 3.6V VBUS 5.0V ADMPU 43.2kΩ (FOR 1A) 75.0kΩ (FOR 0.5A) HLPU 300kΩ SDPPU 5.1kΩ D- DADMPD 49.9kΩ HPD 14.25kΩ TO 24.8kΩ D+ SDPPD 10kΩ VBUS 5.0V D- 2MΩ (MIN) DSDPPD 10kΩ 2MΩ (MIN) Figure 3.
PAGE 17
MAX14578E/MAX14578AE USB Battery Charger Detectors I2C Serial Interface (MAX14578E) in a single-master system has an open-drain SCL output. Each transmission consists of a START condition (Figure 4) sent by a master, followed by the MAX14578E 7-bit slave address plus a R/W bit, a register address byte, one or more data bytes, and finally a STOP condition. Serial Addressing The MAX14578E operates as a slave device that sends and receives data through an I2C-compatible 2-wire interface.
PAGE 18
MAX14578E/MAX14578AE USB Battery Charger Detectors Bit Transfer recipient. When the MAX14578E is transmitting to the master, the master generates the acknowledge bit because the master is the recipient. Acknowledge The MAX14578E has a 7-bit long slave address. The bit following a 7-bit slave address is the R/W bit, which is low for a write command and high for a read command. The slave address is 01011001 for read commands and 01011000 for write commands. See Figure 8.
PAGE 19
MAX14578E/MAX14578AE USB Battery Charger Detectors ADDRESS = 0x58 S 0 1 0 1 REGISTER ADDRESS = 0x01 0 = WRITE 1 0 0 0 A 0 0 0 0 REGISTER 0x01 WRITE DATA 0 0 0 1 A S = START BIT P = STOP BIT A = ACK d7 d6 d5 d4 d3 d2 d1 d0 A P N = NACK d_ = DATA BIT Figure 9.
PAGE 20
MAX14578E/MAX14578AE USB Battery Charger Detectors 0 = WRITE ADDRESS = 0x58 S 0 1 0 1 1 0 0 0 1 0 1 1 A 0 0 1 = READ ADDRESS = 0x59 S 0 REGISTER ADDRESS = 0x01 0 0 0 0 0 0 1 A/N P d1 d0 A/N P REGISTER 0x00 READ DATA A 1 0 d7 d6 d5 d4 d3 d2 Figure 11. Format for Reads (Repeated START) Table 4.
PAGE 21
MAX14578E/MAX14578AE USB Battery Charger Detectors RC 1MΩ RD 1.5kΩ RC 50MΩ TO 100MΩ RD 330Ω CHARGE-CURRENTLIMIT RESISTOR DISCHARGE RESISTANCE CHARGE-CURRENTLIMIT RESISTOR DISCHARGE RESISTANCE HIGHVOLTAGE DC SOURCE CS 100pF STORAGE CAPACITOR DEVICE UNDER TEST Figure 12. Human Body ESD Test Model CS 150pF STORAGE CAPACITOR DEVICE UNDER TEST Figure 14.
PAGE 22
MAX14578E/MAX14578AE USB Battery Charger Detectors Chip Information PROCESS: BiCMOS 22 Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
PAGE 23
MAX14578E/MAX14578AE USB Battery Charger Detectors Revision History REVISION NUMBER REVISION DATE 0 3/11 Initial release 1 2/12 Added TQFN package, corrected MAX14578E Functional Diagram/Typical Operating Circuit, and corrected default values for MAX14578AE in Table 2 2 9/12 Updated Package Thermal Characteristics section and VB supply current parameter for the MAX14578A 3 8/13 Removed USB dead-battery charging information DESCRIPTION PAGES CHANGED — 1, 2, 8, 9, 13, 22 2, 3 1, 11, 12, 13 Max