19-2844; Rev 1; 8/03
±15kV ESD-Protected USB On-the-Go
Charge Pump and Comparators in UCSP
General Description
The MAX3355E integrates a charge pump and com-
parators to enable a system with an integrated USB on-
the-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 cam-
eras 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 negoti-
ation for the USB according to the session request pro-
tocol (SRP) and host negotiation protocol (HNP).
The MAX3355E operates with logic supply voltages
(V
L
) as low as 1.65V, ensuring compatibility with low-
voltage ASICs. The device also features a logic-selec-
table 1µA shutdown mode.
The MAX3355E has built-in ±15kV ESD-protection cir-
cuitry 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.
Features
o
Guaranteed 8mA (min) V
BUS
Charge-Pump Output
o
±15kV ESD Protection on V
BUS
and ID_IN
o
Up to +6.0V Backdrive Capability for V
BUS
o
+2.6V to +5.5V Operating Voltage Range
o
V
L
Operates Down to +1.65V
o
Guaranteed V
BUS
Input Impedance When Not
Driven
o
Automatic C
LOAD
Detection
o
Comparators for Host Negotiation Protocol
o
ID_IN Detection
o
Available in 4 x 3 UCSP or 14-Pin TSSOP Package
MAX3355E
Ordering Information
PART
MAX3355EEBC-T
MAX3355EEUD
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
4 x 3 UCSP
14 TSSOP
TOP
MARK
ABE
—
Applications
Cell Phones
PDAs
MP3 Players
Digital Cameras
Pin Configurations appear at end of data sheet.
Functional Diagram
V
CC
C+ C-
V
CC
LOGIC SUPPLY
+1.65V TO V
CC
V
L
CURRENT
SOURCE
ESD
OFFVBUS
SHDN
STATUS1
STATUS2
DUAL-ROLE
ASIC
ID_OUT
ESD
LEVEL
SHIFTER
ON/OFF
CHARGE
PUMP
5V AT 8mA
STATUS1
STATUS2
V
BUS
COMPARATORS
40kΩ TO
100kΩ
USB CONNECTOR
GND
GND
V
BUS
V
BUS
MAX3355E
ID_IN
ID
USB
XCVR
D+
D-
________________________________________________________________
Maxim Integrated Products
1
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.
±15kV ESD-Protected USB On-the-Go
Charge Pump and Comparators in UCSP
MAX3355E
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND)
V
CC
, V
L
, V
BUS
, ID_IN.............................................-0.3V to +6.0V
C+..................................................................(V
CC
- 0.3V) to +6V
C-................................................................-0.3V to (V
CC
+ 0.3V)
OFFVBUS, SHDN,
STATUS1,
STATUS2, ID_OUT ....................................-0.3V to (V
L
+ 0.3V)
V
BUS
Short Circuit to GND .........................................Continuous
Output Current (all other pins)..........................................±15mA
Continuous Power Dissipation (T
A
= +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
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.
ELECTRICAL CHARACTERISTICS
(V
CC
= +2.6V to +5.5V, V
L
= +1.65V to V
CC
, C1 = 0.1µF, V
CC
decoupled with 1µF capacitor to GND, V
L
decoupled with 0.1µF
capacitor to GND, C
LOAD
= 1µF (min), ESR
LOAD
= 1Ω (max), T
A
= T
MIN
to T
MAX
. Typical values are at V
CC
= +3.0V, V
L
= 1.8V, T
A
=
+25°C, unless otherwise noted.) (Notes 1, 2)
PARAMETER
Supply Voltage
Logic Supply Voltage
Logic Supply Current
SYMBOL
V
CC
V
L
I
L
No activity on V
BUS
; comparator and
reference active
Operating Supply Current
I
CC
Device A configured,
OFFVBUS
= V
L
,
I
LOAD
= 8mA, charge pump on
Device B configured,
SHDN
= GND
Device A configured,
SHDN
= GND
Device A configured,
OFFVBUS
= V
L
,
charge pump on
Device A configured,
OFFVBUS
= V
L
,
charge pump on
V
OH
V
OL
V
IH
V
IL
I
LKG
OFFVBUS, SHDN
= GND or V
L
I
LOAD
= 0 to 8mA, C
LOAD
= 1µF,
OFFVBUS
= V
L
, ID_IN = GND
No load, C
LOAD
= 1µF,
OFFVBUS
= V
L
,
ID_IN = GND
OFFVBUS
= GND
OFFVBUS
= GND, V
BUS
= +6.0V
I
SOURCE
= +1mA
I
SINK
= -1mA
2/3 x V
L
0.4
±1
2/3 x V
L
0.4
30
+150
+20
CONDITIONS
MIN
2.6
1.65
TYP
MAX
5.5
V
CC
100
200
20
1
UNITS
V
V
µA
µA
mA
µA
°C
°C
Shutdown Supply Current
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
CCSHDN
V
V
µA
V
BUS
OUTPUT VOLTAGE: DEVICE A CONFIGURED
4.63
4.8
200
150
mV
µA
5.25
V
V
BUS
Output Voltage
V
BUS
Leakage Voltage
V
BUS
Sink Current
2
_______________________________________________________________________________________
±15kV ESD-Protected USB On-the-Go
Charge Pump and Comparators in UCSP
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.6V to +5.5V, V
L
= +1.65V to V
CC
, C1 = 0.1µF, V
CC
decoupled with 1µF capacitor to GND, V
L
decoupled with 0.1µF
capacitor to GND, C
LOAD
= 1µF (min), ESR
LOAD
= 1Ω (max), T
A
= T
MIN
to T
MAX
. Typical values are at V
CC
= +3.0V, V
L
= 1.8V, T
A
=
+25°C, unless otherwise noted.) (Notes 1, 2)
PARAMETER
V
BUS
Source Current
V
BUS
Short-Circuit Current Limit
V
BUS
Output Ripple
Charge-Pump Switching
Frequency
V
BUS
Input Impedance
R
INVBUS
OFFVBUS
= GND or
SHDN
= GND
C
LOAD
= 20µF,
OFFVBUS
= V
L
, ID_IN =
V
CC
, I
BUS
source on-time = t
VBUSCHRG
C
LOAD
= 95µF,
OFFVBUS
= V
L
, ID_IN =
V
CC
, I
BUS
source on-time = t
VBUSCHRG
OFFVBUS
= V
L
, ID_IN = V
CC
(Note 4)
t
VBUSCHRG
OFFVBUS
= V
L
, ID_IN = V
CC
, Device B
(Note 4)
V
BUS
rising
450
155
(max)
4.4
600
105
40
LOAD DETECTION V
BUS
OUTPUT VOLTAGE
2.1
V
1.9
850
56
(min)
4.63
µA
ms
SYMBOL
CONDITIONS
OFFVBUS
= V
L,
ID_IN = GND
V
BUS
shorted to GND
I
LOAD
= 8mA, C
LOAD
= 1µF,
OFFVBUS
= V
L
, ID_IN = GND (Note 3)
100
500
100
MIN
8
200
TYP
MAX
UNITS
mA
mA
mV
kHz
kΩ
MAX3355E
V
BUS
Output Voltage
V
BUS
Source Current
V
BUS
Current Gate Time
V
BUS
COMPARATOR
V
BUS
Valid Comparator Threshold
V
BUS
Valid Comparator Hysteresis
Session Valid Comparator
Threshold
Session Valid Comparator
Hysteresis
B-Session End Comparator
Threshold
B-Session End Comparator
Hysteresis
Shutdown Comparator
ID_IN
ID_IN Voltage Input for Device B
ID_IN Voltage Input for Device A
ID_IN Input Impedance
ESD PROTECTION (ID_IN, V
BUS
)
Human Body Model
IFC 1000-4-2 Air-Gap Discharge
IFC 1000-4-2 Contact Discharge
V
TH,SHDN
V
THSESEND
V
THSESVLD
V
THVBUSVLD
4.55
20
V
mV
1.12
1.4
15
1.68
V
mV
0.4
0.5
30
0.6
V
mV
0.8
2/3 x V
cc
2.4
V
V
0.4
150
200
±15
±15
±8
250
V
kΩ
kV
kV
kV
_______________________________________________________________________________________
3
±15kV ESD-Protected USB On-the-Go
Charge Pump and Comparators in UCSP
MAX3355E
TIMING CHARACTERISTICS
(V
CC
= +2.6V to +5.5V, V
L
= +1.65V to V
CC
, C1 = 0.1µF, V
CC
decoupled with 1µF capacitor to GND, V
L
decoupled with 0.1µF
capacitor to GND, C
LOAD
= 1µF (min), ESR
LOAD
= 1Ω (max), T
A
= T
MIN
to T
MAX
. Typical values are at V
CC
= +3.0V, V
L
= 1.8V, T
A
=
+25°C, unless otherwise noted.) (Notes 1, 2)
PARAMETER
V
BUS
Rise Time
OFFVBUS
Propagation Delay
Comparator Propagation Delay
Time to Exit Shutdown
Time to Shutdown
ID_OUT Rise Time
ID_OUT Fall Time
C
ID_OUT
= 50pF
C
ID_OUT
= 50pF
SYMBOL
CONDITIONS
0 to 4.4V, C
LOAD
= 1µF, I
LOAD
= 8mA
6
3
50
1
10
10
MIN
TYP
MAX
100
UNITS
ms
µs
µs
µs
µs
ns
ns
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.
Typical Operating Characteristics
(V
CC
, V
L
= +3.3V, C1 = 0.1µF, V
CC
decoupled with 1µF capacitor to GND, V
L
decoupled with 0.1µF capacitor to GND, C
LOAD
= 1µF
min, ESR
LOAD
= 1Ω max, T
A
= +25°C, unless otherwise noted.)
V
CC
INPUT CURRENT
vs. V
BUS
OUTPUT CURRENT
MAX3355E toc01
V
BUS
OUTPUT VOLTAGE
vs. V
BUS
OUTPUT CURRENT
MAX3355E toc02
V
BUS
OUTPUT RIPPLE VOLTAGE
vs. V
CC
INPUT VOLTAGE
I
VBUS
= 8mA
V
BUS
OUTPUT RIPPLE VOLTAGE (mV)
125
100
75
50
25
0
MAX3355E toc03
120
100
V
CC
INPUT CURRENT (mA)
80
60
40
20
0
0
10
20
30
40
V
CC
= 2.6V
V
CC
= 4.0V
V
CC
= 5.5V
5.25
5.00
150
V
BUS
OUTPUT VOLTAGE (V)
V
CC
= 4.0V
4.75
V
CC
= 5.5V
V
CC
= 2.6V
4.25
4.50
50
4.00
0
10
20
30
40
50
V
BUS
OUTPUT CURRENT (mA)
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
BUS
OUTPUT CURRENT (mA)
V
CC
INPUT VOLTAGE (V)
4
_______________________________________________________________________________________
±15kV ESD-Protected USB On-the-Go
Charge Pump and Comparators in UCSP
Typical Operating Characteristics (continued)
(V
CC
, V
L
= +3.3V, C1 = 0.1µF, V
CC
decoupled with 1µF capacitor to GND, V
L
decoupled with 0.1µF capacitor to GND, C
LOAD
= 1µF
min, ESR
LOAD
= 1Ω max, T
A
= +25°C, unless otherwise noted.)
V
BUS
OUTPUT VOLTAGE
vs. V
CC
INPUT VOLTAGE
5.2
V
BUS
OUTPUT VOLTAGE (V)
5.0
4.8
4.6
I
VBUS
= 8mA
4.4
4.2
4.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
CC
INPUT VOLTAGE (V)
65
-40
-15
10
35
60
85
TEMPERATURE (°C)
I
VBUS
= 0mA
MAX3355E toc04
MAX3355E
V
BUS
INPUT IMPEDANCE
vs. TEMPERATURE
MAX3355E toc05
5.4
70
69
V
BUS
INPUT IMPEDANCE (kΩ)
68
67
66
SUPPLY CURRENT
vs. TEMPERATURE
I
VBUS
= 8mA
19
V
CC
= 2.6V
18
V
CC
= 4.0V
0
17
V
CC
= 5.5V
16
-40
-15
10
35
60
85
0
MAX3355E toc06
V
BUS
vs. CAPACITANCE LOAD
DURING LOAD DETECTION
MAX3355E toc07
20
SUPPLY CURRENT (mA)
C
VBUS
= 10µF
1V/div
C
VBUS
= 96µF
1V/div
40ms/div
TEMPERATURE (°C)
_______________________________________________________________________________________
5
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