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LM3502SQ-35 Folha de dados(PDF) 2 Page - Texas Instruments |
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LM3502SQ-35 Folha de dados(HTML) 2 Page - Texas Instruments |
2 / 28 page A1 A2 A3 B1 B3 C1 C3 D1 D2 D3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LM3502 SNVS339A – SEPTEMBER 2005 – REVISED AUGUST 2006 www.ti.com Connection Diagrams Figure 2. TOP VIEW Figure 3. TOP VIEW 10-Bump Thin DSBGA 16-Lead Thin WQFN See Package Number (YPA0010) See Package Number (RGH0016A) PIN DESCRIPTIONS Bump # Pin # Name Description A1 9 Cntrl Shutdown Control Connection B1 7 Fb Feedback Voltage Connection C1 6 VOUT2 Drain Connections of The NMOS and PMOS Field Effect Transistor (FET) Switches (Figure 4: N2 and P1) D1 4 VOUT1 Over-Voltage Protection (OVP) and Source Connection of The PMOS FET Switch (Figure 4: P1) D2 2 and 3 Sw Drain Connection of The Power NMOS Switch (Figure 4: N1) D3 15 and 16 PGND Power Ground Connection C3 14 AGND Analog Ground Connection B3 13 VIN Supply or Input Voltage Connection A3 12 En2 NMOS FET Switch Control Connection A2 10 En1 PMOS FET Switch Control Connection 1 NC No Connection 5 NC No Connection 8 NC No Connection 11 NC No Connection DAP DAP Die Attach Pad (DAP), must be soldered to the printed circuit board’s ground plane for enhanced thermal dissipation. Cntrl (Bump A1): Shutdown control pin When VCntrl is ≥ 1.4V, the LM3502 is enabled or ON. When VCntrl is ≤ 0.3V, the LM3502 will enter into shutdown mode operation. The LM3502 has an internal pull down resistor on the Cntrl pin, thus the device is normally in the off state or shutdown mode of operation. Fb (Bump B1): Output voltage feedback connection The white LED string network current is set/programmed using a resistor from this pin to ground. VOUT2 (Bump C1): Drain connections of the internal PMOS and NMOS FET switches . (Figure 4: P1 and N2). It is recommended to connect 100nF at VOUT2 for the LM3502-35V and LM3502-44 versions if VOUT2 is not used. VOUT1 (Bump D1): Source connection of the internal PMOS FET switch (Figure 4: P1) and OVP sensing node The output capacitor must be connected as close to the device as possible, between the VOUT1 pin and ground plane. Also connect the Schottky diode as close as possible to the 2 Submit Documentation Feedback Copyright © 2005–2006, Texas Instruments Incorporated Product Folder Links: LM3502 |
Nº de peça semelhante - LM3502SQ-35 |
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Descrição semelhante - LM3502SQ-35 |
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