See Table 2-1 for pin informat…
Microchip TechnologyUnited States
IC LED DRIVER CTRLR PWM 8SOIC
HV9910B is an open-loop current mode LED driver IC with 8.0-450V input voltage, internal linear regulator, PWM and linear dimming, in 8-lead SOIC package.Checked against the datasheet
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Technical parameters
Key specs
TopologyBuck
Outputs1
Input voltage8 ~ 450 V
Datasheet-verified parameters
16 items| Parameter | Value and test conditions | Source |
|---|---|---|
| Input DC supply voltage range | Min: 8.0 V, Max: 450 V (DC input voltage) | |
| Package | 8-lead SOIC (LG) | |
| Operating ambient temperature | -40°C < TA < +125°C | |
| RoHS | Lead (Pb)-free/ROHS-compliant package | |
| Topology | Open loop peak current controller (Buck LED driver) | |
| Internally regulated voltage | Min: 7.25 V, Typ: 7.5 V, Max: 7.75 V (VIN=8.0V, IDD(ext)=0, 500pF at GATE; RT=226kΩ, PWMD=VDD) |
All parameters (20)
| Power | |
|---|---|
| Current - Output / Channel | - |
| Voltage - Output | - |
| Voltage - Supply (Max) | 450V |
| Voltage - Supply (Min) | 8V |
| AC and DC characteristics | |
| Frequency | 25kHz, 100kHz |
| Environment and package | |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C~125°C(TA) |
| Package | Tape & Reel (TR); Cut Tape (CT); Digi-Reel® |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Other | |
| Applications | Backlight, Lighting, Signage |
| Base Product Number | HV9910 |
| Dimming | Analog, PWM |
| Internal Switch(s) | No |
| Mfr | Microchip Technology |
| Number of Outputs | 1 |
| Product Status | Active |
| Series | - |
| Topology | Step-Down (Buck) |
| Type | DC DC Controller |
Pinout and package
See Table 2-1 for pin informat…
| Pin | Name | Function | Source |
|---|---|---|---|
| 1 | VIN: Input of an 8.0 - 450V linear regulator. | ||
| 2 | CS: Current sense pin used to sense the FET current by means of an external sense resistor. When this pin exceeds the lower of either the internal 250mV or the voltage at the LD pin, the GATE output goes low. | ||
| 3 | GND: Ground return for all internal circuitry. This pin must be electrically connected to the ground of the power train. | ||
| 4 | GATE: Output GATE driver for an external N-channel power MOSFET. | ||
| 5 | PWMD: PWM dimming input of the IC. When this pin is pulled to GND, the GATE driver is turned off. When the pin is pulled high, the GATE driver operates normally. | ||
| 6 | VDD: Power supply for all internal circuits. It must be bypassed with a low ESR capacitor to GND (≥ 0.1μF). | ||
| 7 | LD: Linear dimming input and sets the current sense threshold as long as the voltage at the pin is less than 250mV (typ). | ||
| 8 | RT: Sets the oscillator frequency. When a resistor is connected between RT and GND, the HV9910B operates in constant frequency mode. When the resistor is connected between RT and GATE, the IC operates in constant off-time mode. |
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