MAXIM MAX3355E Technical data

现货库存、技术资料、百科信息、热点资讯，精彩尽在鼎好!

General Description

The MAX3355E integrates a charge pump and comparators to enable a system with an integrated USB onthe-go (OTG) dual-role transceiver to function as a USB OTG dual-role device. USB OTG facilitates the direct connection of peripherals and mobile devices such as PDAs, cellular phones, MP3 players, and digital cameras to one another without a host PC.

The MAX3355E’s internal charge pump supplies V

BUS

power and signaling that is required by the transceiver as defined in On-the-Go Supplement to the USB 2.0 Specification, Revision 1.0. The MAX3355E features ID detection and internal comparators for monitoring V

BUS

. The V

BUS

status outputs are used during negotiation for the USB according to the session request protocol (SRP) and host negotiation protocol (HNP).

The MAX3355E operates with logic supply voltages (VL) as low as 1.65V, ensuring compatibility with lowvoltage ASICs. The device also features a logic-selectable 1µA shutdown mode.

The MAX3355E has built-in ±15kV ESD-protection circuitry to protect the V

BUS

and ID_IN pins. The device is available in a miniature 4 x 3 chip-scale package (UCSP), as well as a 14-pin TSSOP package, and is specified for operation over the -40°C to +85°C extended temperature range.

Applications

Cell Phones MP3 Players

PDAs Digital Cameras

Features

♦ Guaranteed 8mA (min) V

BUS

Charge-Pump Output

♦ ±15kV ESD Protection on V

BUS

and ID_IN

♦ Up to +6.0V Backdrive Capability for V

BUS

♦ +2.6V to +5.5V Operating Voltage Range

♦ V

Operates Down to +1.65V

♦ Guaranteed V

BUS

Input Impedance When Not

Driven

♦ Automatic C

LOAD

Detection

♦ Comparators for Host Negotiation Protocol

♦ ID_IN Detection

♦ Available in 4 x 3 UCSP or 14-Pin TSSOP Package

MAX3355E

±15kV ESD-Protected USB On-the-Go

Charge Pump and Comparators in UCSP

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

CHARGE

PUMP

5V AT 8mA

40kΩ TO

100kΩ

STATUS2

STATUS1

ON/OFF

MAX3355E

BUS

COMPARATORS

CURRENT

SOURCE

BUS

GND

USB CONNECTOR

ID_IN

GND

D+

D-

C+

C-

ESD

LEVEL

SHIFTER

OFFVBUS

SHDN

STATUS1

STATUS2

ID_OUT

DUAL-ROLE

ASIC

LOGIC SUPPLY +1.65V TO V

USB

XCVR

ESD

Functional Diagram

19-2844; Rev 1; 8/03

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Pin Configurations appear at end of data sheet.

PART TEMP RANGE

MAX3355EEBC-T -40°C to +85°C 4 x 3 UCSP ABE

MAX3355EEUD -40°C to +85°C 14 TSSOP —

PINPACKAGE

TOP

MARK

MAX3355E

±15kV ESD-Protected USB On-the-Go Charge Pump and Comparators in UCSP

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +2.6V to +5.5V, VL= +1.65V to VCC, C1 = 0.1µF, VCCdecoupled with 1µF capacitor to GND, VLdecoupled with 0.1µF capacitor to GND, C

LOAD

= 1µF (min), ESR

LOAD

= 1Ω (max), TA= T

MIN

to T

MAX

. Typical values are at VCC= +3.0V, VL= 1.8V, TA=

+25°C, unless otherwise noted.) (Notes 1, 2)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

(All voltages referenced to GND) V

, VL, V

BUS

, ID_IN.............................................-0.3V to +6.0V

C+..................................................................(V

- 0.3V) to +6V

C-................................................................-0.3V to (V

+ 0.3V)

OFFVBUS, SHDN, STATUS1,

STATUS2, ID_OUT ....................................-0.3V to (V

+ 0.3V)

BUS

Short Circuit to GND .........................................Continuous

Output Current (all other pins)..........................................±15mA

Continuous Power Dissipation (T

= +70°C)

4 x 3 UCSP (derate 6.5mW/°C above +70°C) .............520mW

14-Pin TSSOP (derate 9.1mW/°C above +70°C) .........727mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Junction Temperature......................................................+150°C

Lead Temperature (soldering, 10s) .................................+300°C

Bump Temperature (soldering)

Infrared (15s) ...............................................................+200°C

Vapor Phase (20s) .......................................................+215°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

Logic Supply Voltage V

Logic Supply Current I

Operating Supply Current I

Shutdown Supply Current I

Thermal-Shutdown Protection Threshold

Thermal-Shutdown Protection Hysteresis

LOGIC INPUTS AND OUTPUTS

STATUS1, STATUS2, ID_OUT Output Voltage

OFFVBUS, SHDN Input Voltage

Input Leakage Current I

OUTPUT VOLTAGE: DEVICE A CONFIGURED

BUS

Output Voltage

BUS

Leakage Voltage OFFVBUS = GND 200 mV

BUS

Sink Current OFFVBUS = GND, V

BUS

CCSHDN

LKG

No activity on V reference active

Device A configured, OFFVBUS = VL, I

= 8mA, charge pump on

LOAD

Device B configured, SHDN = GND 1 Device A configured, SHDN = GND 30

Device A configured, OFFVBUS = VL, charge pump on

SOURCE

SINK

= +1mA 2/3 x V

= -1mA 0.4

OFFVBUS, SHDN = GND or V

= 0 to 8mA, C

LOAD

OFFVBUS = V

No load, C ID_IN = GND

2.6 5.5 V

1.65 V

100 µA

; comparator and

BUS

200 µA

20 mA

+150 °C

+20 °C

2/3 x V

0.4

±1 µA

= 1µF,

LOAD

, ID_IN = GND

= 1µF, OFFVBUS = VL,

LOAD

= +6.0V 150 µA

BUS

4.63 5.25

4.8

µA

MAX3355E

±15kV ESD-Protected USB On-the-Go

Charge Pump and Comparators in UCSP

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.6V to +5.5V, VL= +1.65V to VCC, C1 = 0.1µF, VCCdecoupled with 1µF capacitor to GND, VLdecoupled with 0.1µF capacitor to GND, C

LOAD

= 1µF (min), ESR

LOAD

= 1Ω (max), TA= T

MIN

to T

MAX

. Typical values are at VCC= +3.0V, VL= 1.8V, TA=

+25°C, unless otherwise noted.) (Notes 1, 2)

BUS

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Source Current OFFVBUS = V

Short-Circuit Current Limit V

Output Ripple

Charge-Pump Switching Frequency

Input Impedance R

BUS

LOAD DETECTION V

Output Voltage

BUS

Source Current OFFVBUS = VL, ID_IN = VCC (Note 4) 450 600 850 µA

BUS

Current Gate Time t

BUS

COMPARATOR

BUS

Valid Comparator Threshold V

BUS

Valid Comparator Hysteresis 20 mV

BUS

Session Valid Comparator Threshold

Session Valid Comparator Hysteresis

B-Session End Comparator Threshold

B-Session End Comparator Hysteresis

Shutdown Comparator V

ID_IN

ID_IN Voltage Input for Device B 2/3 x V

ID_IN Voltage Input for Device A 0.4 V

ID_IN Input Impedance 150 200 250 kΩ

ESD PROTECTION (ID_IN, V

Human Body Model ±15 kV

IFC 1000-4-2 Air-Gap Discharge ±15 kV

IFC 1000-4-2 Contact Discharge ±8 kV

OUTPUT VOLTAGE

BUS

INVBUS

VBUSCHRG

THVBUSVLDVBUS

THSESVLD

THSESEND

TH,SHDN

)

shorted to GND 200 mA

BUS

= 8mA, C

LOAD

OFFVBUS = V

ID_IN = GND 8 mA

LOAD

, ID_IN = GND (Note 3)

= 1µF,

100 mV

500 kHz

OFFVBUS = GND or SHDN = GND 40 100 kΩ

= 20µF, OFFVBUS = VL, ID_IN =

LOAD

, I

source on-time = t

BUS

VBUSCHRG

= 95µF, OFFVBUS = VL, ID_IN =

, I

source on-time = t

BUS

VBUSCHRG

C V

LOAD

OFFVBUS = VL, ID_IN = VCC, Device B (Note 4)

2.1

155

(max)

105

1.9

(min)

rising 4.4 4.55 4.63 V

1.12 1.4 1.68 V

15 mV

0.4 0.5 0.6 V

30 mV

0.8 2.4 V

MAX3355E

±15kV ESD-Protected USB On-the-Go Charge Pump and Comparators in UCSP

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC, VL= +3.3V, C1 = 0.1µF, VCCdecoupled with 1µF capacitor to GND, VLdecoupled with 0.1µF capacitor to GND, C

LOAD

= 1µF

min, ESR

LOAD

= 1Ω max, TA= +25°C, unless otherwise noted.)

100

120

050

VCC INPUT CURRENT

vs. V

BUS

OUTPUT CURRENT

MAX3355E toc01

BUS

OUTPUT CURRENT (mA)

INPUT CURRENT (mA)

2010 30 40

VCC = 2.6V V

= 4.0V

= 5.5V

4.00

4.50

4.25

4.75

5.00

5.25

050

BUS

OUTPUT VOLTAGE

vs. V

BUS

OUTPUT CURRENT

MAX3355E toc02

BUS

OUTPUT CURRENT (mA)

BUS

OUTPUT VOLTAGE (V)

2010 30 40

VCC = 4.0V

VCC = 5.5V

VCC = 2.6V

100

125

150

2.5 5.5

BUS

OUTPUT RIPPLE VOLTAGE

vs. V

INPUT VOLTAGE

MAX3355E toc03

INPUT VOLTAGE (V)

BUS

OUTPUT RIPPLE VOLTAGE (mV)

3.53.0 4.0 5.04.5

VBUS

= 8mA

TIMING CHARACTERISTICS

(VCC= +2.6V to +5.5V, VL= +1.65V to VCC, C1 = 0.1µF, VCCdecoupled with 1µF capacitor to GND, VLdecoupled with 0.1µF capacitor to GND, C

LOAD

= 1µF (min), ESR

LOAD

= 1Ω (max), TA= T

MIN

to T

MAX

. Typical values are at VCC= +3.0V, VL= 1.8V, TA=

+25°C, unless otherwise noted.) (Notes 1, 2)

Note 1: Limits are 100% production tested at +25°C. Limits over temperature are guaranteed by design. Note 2: All currents out of the device are positive; all currents into the device are negative. All voltages are referenced to device

ground unless otherwise specified.

Note 3: The ripple voltage is strongly correlated to the bus capacitance and its ESR. Note 4: The V

BUS

current source and current gate time vary together with process and temperature such that the resulting V

BUS

pulse is guaranteed to drive a <13µF load to a voltage >2.0V, and to drive a >96µF load to a voltage <2.2V.

BUS

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Rise Time 0 to 4.4V, C

OFFVBUS Propagation Delay 6µs

Comparator Propagation Delay 3µs

Time to Exit Shutdown 50 µs

Time to Shutdown 1µs

ID_OUT Rise Time C

ID_OUT Fall Time C

ID_OUT

= 8mA 100 ms

LOAD

= 1µF, I

= 50pF 10 ns

+ 7 hidden pages