BH76906GU-E2 Rohm Semiconductor, BH76906GU-E2 Datasheet - Page 6

• Manufacturer Part Number: BH76906GU-E2
• Description: IC VIDEO DRIVER CAP-LESS 8WLCSP
• Manufacturer: Rohm Semiconductor

Specifications of BH76906GU-E2

• Package / Case: 8-WLCSP
• Applications: Driver
• Number Of Circuits: 1
• Current - Supply: 17mA
• Current - Output / Channel: 30mA
• Voltage - Supply, Single/dual (±): 2.5 V ~ 3.45 V, ±1.25 V ~ 1.725 V
• Mounting Type: Surface Mount
• Svhc: No SVHC (18-Jun-2010)
• Base Number: 76906
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Power Dissipation Pd: 580mW
• Supply Current: 17mA
• Supply Voltage: RoHS Compliant
• Supply Voltage Max: 3.45V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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BH76906GU, BH76909GU, BH76912GU, BH76916GU, BH76706GU
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3) Configuration of BH769xxGU and BH76706GU
4) Input pin format and sag characteristic
While a BH769xxGU or BH76706GU is a low voltage operation video driver, since it has a large dynamic range of
approximately 5.2 Vpp, a resistance termination method that is compatible regardless of signal form (termination by 150
kΩ) is used, and not a clamp method that is an input method exclusively for video signals.
Therefore, since a BH769xxGU or BH76706GU operates normally even if there is no synchronization signal in the input
signal, it is compatible with not only normal video signals but also chroma signals and R.G.B. signals and has a wide
application range.
Moreover, concerning sag (lowering of low band frequency) that occurs at the input pin and becomes a problem for the
resistance termination method, since the input termination resistor is a high 150 kΩ, even if it is combined with a small
capacity input capacitor, a sag characteristic that is not a problem in actual use is obtained.
In evaluating the sag characteristic, it is recommended that you use an H-bar signal in which sag readily stands out. (Fig.
8 to Fig. 10)
As shown in Fig. 6, a BH769xxGU or BH76706GU is a dual-supply amplifier and charge pump circuit integrated in one IC.
Accordingly, while there is +3 V single-supply operation, since a dual-supply operation amplifier is used, an output
coupling capacitor is not needed.
1μF
Vcc +3V
Vcc +3V
Charge pump
AMP
1μF
SW1
Charging mode
Charge current
Flying capacitor
VCC
VCC
+
+
－
－
Fig.6 Configuration Diagram of BH769xxGU or BH76706GU
Fig.5 Principles of Charge Pump Circuit
SW2
-VCC
75Ω
1μF
Anchor
Capacitor
75Ω
6/16
1-chip integration
Dual-supply amplifier
Charge pump
Vcc +3V
SW1
Charge current
Charge shifting mode
Flying capacitor
Charge current
+
+
－
－
SW2
Although single-supply,
output capacitor is not needed.
－
+
－
+
Anchor Capacitor
-
Vcc occurs
-Vcc
Technical Note
2009.03 - Rev.A
occurs