FAN3988IL6X_F113 - Fairchild

May 2011

FAN3988 • Rev. 1.0.10

FAN3988 — USB/Charger and Over-Voltage Detection Device

FAN3988

USB/Charger and Over-Voltage Detection Device

Features

 Charger/USB Detection Device

 Charger/USB Device Detection Flag

 Over-/Under-Voltage Detection Flag

 VBUS Supply: 2.7V to 20V

 CON of 1.5pF

 6-Lead MicroPak™ MLP Package

Applications

 Mobile Phones

 Handheld Devices

Description

The FAN3988 is a USB-connection-monitoring device

used to determine if a standard USB device or a battery-

charging device is connected.

The FAN3988 sets the FLAG1 pin to logic HIGH or

LOW as an indicator to the system controller that a

standard USB device or a charger is connected to the

USB port. The FAN3988 also monitors the VBUS for

over- or under-voltage conditions. The FLAG2 pin is set

LOW if VBUS is less than 3.3V or greater than 6.0V.

The FAN3988 is packaged in a very small 6-lead

MicroPak™ MLP package suitable for small board

space applications, such as mobile phones.

Ordering Information

Part Number Operating

Temperature Range Package Packing

Method Quantity

FAN3988IL6X_F113 -40°C to +85°C 6-Lead MicroPak™ MLP Package Reel 3000

Figure 1. Block Diagram

Flag 1

Comparator

OVP

UVP

Flag 2

D-

Vbus

Logic

GND

Std USB/

Charger

Detect

D+

Logic

FAN3988 • Rev. 1.0.10 2

FAN3988 — USB/Charger and Over-Voltage Detection Device

Pin Configuration

Figure 2. Pin Configuration (Top View)

Pin Definitions

Pin# Name Type Description

1 Vbus Input Power input from charger, USB device, or handheld battery

2 D- Input USB data input

3 D+ Input USB data input

4 Gnd Input Device ground

5 Flag2 Output Over/under-voltage flag output

6 Flag1 Output Charger/standard USB device detect flag

Truth Table

Connection State VBUS D- D+ FLAG1 FLAG2

STD USB Device(1) 0V Open Open LOW LOW

STD USB Device 0V R to Gnd R to Gnd LOW LOW

STD USB Device 5V R to Gnd R to Gnd LOW HIGH

USB Charger 5V Short to D+ Short to D- HIGH HIGH

VBUS GT 6V GT 6V Short to D+ Short to D- HIGH LOW

VBUS LT 3.3V LT 3.3V Short to D+ Short to D- HIGH LOW

PC Data/Charger 5V Open Open LOW HIGH

Note:

1. See Figure 7.

FAN3988 • Rev. 1.0.10 3

FAN3988 — USB/Charger and Over-Voltage Detection Device

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be

operable above the recommended operating conditions and stressing the parts to these levels is not recommended.

In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.

The absolute maximum ratings are stress ratings only.

Symbol Parameter Min. Max. Unit

VBUS DC Supply Voltage -0.3 20.0 V

Reliability Information

Symbol Parameter Min. Typ. Max. Unit

TJ Junction Temperature +150 °C

TSTG Storage Temperature Range -65 +150 °C

JA Thermal Resistance, JEDEC Standard,

Multi-layer Test Boards, Still Air 41 °C/W

ESD Information

Symbol Parameter Max. Unit

ESD Electrostatic Discharge Information Human Body Model, JESD22-A114 5 kV

Charged Device Model, JESD22-C101 2

Recommended Operating Conditions

The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended

operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not

recommend exceeding them or designing to Absolute Maximum Ratings.

Symbol Parameter Min. Typ. Max. Unit

TA Operating Temperature Range -40 +85 °C

VBUS Supply Voltage Range 2.7 5.0 20.0 V

FAN3988 • Rev. 1.0.10 4

FAN3988 — USB/Charger and Over-Voltage Detection Device

DC Electrical Characteristics

TA = 25°C, VBUS = 5.0V, unless otherwise noted.

Symbol Parameter Condition Min. Typ. Max. Unit

Supply

VBUS Supply Voltage Range VBUS Range 2.7 5.0 20.0 V

IBUS Quiescent Supply Current VBUS = +5.0V, D+ D- Shorted 1.2 2.0 mA

tSUPPLY Power-Up Stabilization Time VBUS = +5.0V, D+ D- Shorted 10 ms

Input Characteristics

CD+ Input Capacitance 1.5 2.0 pF

CD- Input Capacitance 1.5 2.0 pF

Ioff D+ Off Leakage Current VBUS = 0V or 5V VIN on D+ = 5V 1 µA

Ioff D- Off Leakage Current VBUS = 0V or 5V VIN on D- = 5V 1 µA

Output Characteristics

OVDETECT Over-Voltage Threshold

Detect VBUS = +5.0V, Flag2 = LOW 5.8 6.0 6.5 V

OVHYST Over-Voltage Hysteresis Voltage Sweep through Upper

and Lower Trip Points 100 mV

UVDETECT Under-Voltage Threshold

Detect VBUS = +5.0V, Flag2 = LOW 3.0 3.3 3.6 V

UVHYST Under-Voltage Hysteresis Voltage Sweep through Upper

and Lower Trip Points 100 mV

VOH FLAG1/

FLAG2

Minimum HIGH Output

Voltage VBUS = +5.0V, IOH = -20µA 2.4 2.6 V

VOL FLAG1/

FLAG2

Maximum LOW Output

Voltage VBUS = +5.0V, IOL = 20µA 0.3 V

IOH FLAG1/

FLAG2

Minimum HIGH Output

Current -20 µA

IOL FLAG1/

FLAG2

Maximum HIGH Output

Current 20 µA

D+/D-

Threshold 1.025 1.300 1.365 V

toff Flag2 HIGH to LOW 100pF Load 10 ns

ton Flag2 LOW to HIGH 100pF Load 44 ns

FAN3988 • Rev. 1.0.10 5

FAN3988 — USB/Charger and Over-Voltage Detection Device

Typical Performance Characteristics

Figure 3. IBUS vs. vBUS (2.7V-7.0V) No Load Figure 4. IBUS vs. vBUS (8.0V-21V) No Load

Figure 5. No Fault on Flag 1, Skew=65ns

Figure 6. PC Data Running D+/D- (Flag 1 and Flag 2 at Correct Levels)

V

CC

=2.7V-7.0V

0.40

0.50

0.60

0.70

0.80

0.90

1.00

2.70

2.90

3.10

3.30

3.50

3.70

3.90

4.10

4.30

4.50

4.70

4.90

5.10

5.30

5.50

5.70

5.90

6.10

6.30

6.50

6.70

6.90

V

CC

mA

Icc

V

CC

=8.0V-21V

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

8

9

10

11

12

13

14

15

16

17

18

19

20

21

VCC

mA

ICC

FAN3988 • Rev. 1.0.10 6

FAN3988 — USB/Charger and Over-Voltage Detection Device

Application Information

Figure 7. Typical Application System with USB Transceiver

With USB Transceiver (Figure 7)

The FAN3988 sets the FLAG1 pin to logic HIGH or

LOW as an indicator to the system controller that a

standard USB device or a charger is connected to the

USB port. The FAN3988 also monitors the VBUS for

over- or under-voltage conditions. The FLAG2 pin is set

LOW if VBUS is less than 3.3V or greater than 6.0V.

In a standard USB configuration, there is a switch in the

USB transceiver that is always ON in the full-speed

mode. It is ON during the transition from full-speed

mode to high-speed mode and is turned off after

enumeration is complete.

In a condition where D+ and D- are shorted when a

charger is plugged into the USB port, the USB switch is

ON and pulled to VDD, which is about 3.3V, making both

D+ and D- HIGH and flag1 set HIGH – indicating that a

charging device is connected to the port.

In a condition where D+ and D- are connected to a

standard USB device, the D+ is pulled to VDD and D- is

set LOW (due to the 15KΩ pull-down in the USB

tranceiver) and flag1 is LOW.

If D+ and D- are open (floating), D+ is pulled to VDD and

D- floats LOW, which makes flag1 LOW.

Vbus

D-

Std 15K pull-down on D-

input and 1.5K pull-up

on D+ by USB

transceiver.

Control

Flag 1

Vout

D+

1.5K

GND

Vdd

Logic

Battery

Comparator

OVP

UVP

USB

Gnd

D+

D-

Vbus

Flag 2

Rsense

USB Transceiver

Logic

STD USB

Device

(ie USB

Headphones)

Std USB/

Charger

Detect

15K

FAN3988 • Rev. 1.0.5 7

Without USB Transceiver (Figure 8)

The FAN3988 sets the FLAG1 pin to logic HIGH or

LOW as an indicator to the system controller that a

standard USB device or a charger is connected to the

USB port. The FAN3988 also monitors the VBUS for

over- or under-voltage conditions. The FLAG2 pin is set

LOW if VBUS is less than 3.3V or greater than 6.0V.

In a condition where a USB transceiver is not

incorporated or there is a switch between the USB port

and the FAN3988, external resistors must be used to

set the correct input logic states on the FAN3988 D+ D-

inputs. A 5MΩ pull-down on the D- line and a 1MΩ pull-

up to VDD (system supply) on the D+ line are

recommended.

When a condition exists where a charger is plugged into

the USB port (D+ D- shorted), the voltage divider of 1M

and 5M puts a voltage of 2.75V on the D+ D- inputs and

flag1 is HIGH, indicating a charger is connected to port.

In a condition where the USB port is connected to a

standard USB device, the D+ input is pulled up to VDD

(system supply) in parallel with the 1.5KΩ on a USB

transceiver with a parallel R value of 1.497KΩ. The D-

input is connected to a 15KΩ pull-down by the USB

device and in parallel with 5MΩ with a parallel R value

of 14.955KΩ. This condition makes flag1 LOW.

If D+ and D- are open (floating), D+ is pulled to VDD

(system supply) and D- floats LOW, which makes

flag1 LOW.

Figure 8. Typical System Application without USB Transceiver

Flag 2

5M

Rsense

D-

Vbus

GND Flag 1

Std USB/

Charger

Detect

1M

USB

Gnd

D+

D-

Vbus

D+

Control

Battery

Logic

Comparator

OVP

UVP

Vdd

FAN3988 • Rev. 1.0.10 8

FAN3988 — USB/Charger and Over-Voltage Detection Device

Physical Dimensions

Figure 9. 6-Lead MicroPak™ MLP Package

Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner

without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or

obtain the mos t recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the

warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/.

2. DIMENSIONS ARE IN MILLIMETERS

1. CONFORMS TO JEDEC STANDARD M0-252 VARIATION UAAD

4. FILENAME AND REVISION: MAC06AREV4

Notes:

3. DRAWING CONFORMS TO ASME Y14.5M-1994

TOP VIEW

RECOMMENED

LAND PATTERN

BOTTOM VIEW

1.45

1.00

A

B

0.05 C

2X

0.55MAX

0.05 C

(0.49)

(1)

(0.75)

(0.52)

(0.30)

6X

1X

6X

PIN 1

DETAIL A

0.075 X 45

CHAMFER

0.25

0.15

0.35

0.25

0.40

0.30

0.5

(0.05)

1.0

5X

DETAIL A

PIN 1 TERMINAL

0.40

0.30

0.45

0.35

0.10

0.00

0.10 CBA

0.05 C

C

0.05 C

0.05

0.00

5X

6X (0.13)

4X

6X

PIN 1 IDENTIFIER

(0.254)

5. PIN ONE IDENTIFIER IS 2X LENGTH OF ANY

5

OTHER LINE IN THE MARK CODE LAYOUT.

FAN3988 • Rev. 1.0.10 9

FAN3988 — USB/Charger and Over-Voltage Detection Device