BH1772GLC-E2 Rohm Semiconductor, BH1772GLC-E2 Datasheet - Page 4

• Manufacturer Part Number: BH1772GLC-E2
• Description: IC SENSOR LIGHT AND PROXIMITY
• Manufacturer: Rohm Semiconductor

Specifications of BH1772GLC-E2

• Output Type: Digital - I²C
• Sensor Type: Light and Proximity
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: BH1772GLC-E2TR

● Terminal description and Block diagram
● Cautions on use
1) Absolute Maximum Ratings
2) GND voltage
3) Short circuit between terminals and erroneous mounting
4) Operation in strong electromagnetic field
5) Inspection with set PCB
6) Input terminals
7) Thermal design
8) Treatment of package
9) Rush current
Pin No.
1
2
3
4
5
6
7
8
9
10
An excess in the absolute maximum ratings, such as supply voltage ( Vccmax, VSDAmax, VSCLmax, VINTmax,
VGNDNCmax, VLEDCmax ), temperature range of operating conditions ( Topr ), etc., can break down devices,
thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode
exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety
measures including the use of fuses, etc.
Make setting of the potential of the GND, GND_LED terminal so that these will be maintained at the minimum in
any operating state. Furthermore, check to be sure no terminals are at a potential lower than the GND voltage
including an actual electric transient.
In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous
mounting can break down the ICs. Furthermore, if a short circuit occurs due to foreign matters entering between
terminals or between the terminal and the power supply or the GND terminal, the ICs can break down.
Be noted that using ICs in the strong electromagnetic field can malfunction them.
On the inspection with the set PCB, if a capacitor is connected to a low-impedance IC terminal, the IC can suffer
stress. Therefore, be sure to discharge from the set PCB by each process. Furthermore, in order to mount or
dismount the set PCB to/from the jig for the inspection process, be sure to turn OFF the power supply and then
mount the set PCB to the jig. After the completion of the inspection, be sure to turn OFF the power supply and
then dismount it from the jig. In addition, for protection against static electricity, establish a ground for the
assembly process and pay thorough attention to the transportation and the storage of the set PCB.
In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The
Perform thermal design in which there are adequate margins by taking into account the power dissipation
Dusts or scratch on the photo detector may affect the optical characteristics. Please handle it with care.
operation of the parasitic element can cause interference with circuit operation, thus resulting in a malfunction
and then breakdown of the input terminal. Therefore, pay through attention not to handle the input terminals;
such as to apply to the input terminals a voltage lower than the GND respectively, so that any parasitic
element will operate. In addition, apply to the input terminals a voltage within the guaranteed value of
electrical characteristics.
( Pd ) in actual states of use.
current may flow instantaneously. Therefore, give special consideration to power coupling capacitance, power
wiring, width of GND wiring, and routing of connections.
When power is first supplied to the CMOS IC, it is possible that the internal logic may be unstable and rush
Pin Name
NC1
NC2
LEDC
GND_LED
INT
VCC
GND
SCL
SDA
GNDNC
Function
Connect to VDD_LED
or NC
LED current drive
GND for LED terminal
Interrupt terminal
VCC terminal
GND terminal
I
I
Connect to GND or NC
2
2
C bus SCL Pin
C bus SDA Pin
Reflector
Light
Ambient
IrLED
VDD LED
REV. A
GND_LED
LEDC
NC1
NC2
PD PS
IrLED
Driver
DC light
rejection
Amp
PD_ALS
Timing Controller
LED
Pulse
Gen.
Ambient Light Sensor
16bit
ADC
Linear
ADC
Proximity Sensor
PS
CONTROL
LOGIC
ALS
CONTROL
LOGIC
VCC
GND
Linear /
Log
converter
OSC
Registers
GNDNC
Data
interface
INT
POR
Interface
I
2
C
4/4
SDA
SCL
INT