Datasheet

LM2727, LM2737
SNVS205D –AUGUST 2002–REVISED MARCH 2013 www.ti.com
Table 1. Bill of Materials for Typical Application Circuit
ID Part Number Type Size Parameters Qty. Vendor
Synchronous Texas
U1 LM2727 TSSOP-14 TSSOP-14 1
Controller Instruments
Q1, Q2 Si4884DY N-MOSFET SO-8 30V, 4.1mΩ, 36nC 1 Vishay
L1 RLF7030T-1R5N6R1 Inductor 7.1x7.1x3.2mm 1.5µH, 6.1A 9.6mΩ 1 TDK
Cin1, Cin2 C2012X5R1J106M MLCC 0805 10µF 6.3V 2 TDK
Cinx C3216X7R1E105K Capacitor 1206 1µF, 25V 1 TDK
Co1, Co2 6MV2200WG AL-E 10mm D 20mm H 2200µF 6.3V125mΩ 2 Sanyo
Cboot VJ1206X104XXA Capacitor 1206 0.1µF, 25V 1 Vishay
Cin C3216X7R1E225K Capacitor 1206 0.1µF, 25V 1 TDK
Css VJ1206X123KXX Capacitor 1206 12nF, 25V 1 Vishay
Cc1 VJ1206A2R2KXX Capacitor 1206 2.2pF 10% 1 Vishay
Cc2 VJ1206A181KXX Capacitor 1206 180pF 10% 1 Vishay
Rin CRCW1206100J Resistor 1206 10Ω 5% 1 Vishay
Rfadj CRCW12066342F Resistor 1206 63.4kΩ 1% 1 Vishay
Rc1 CRCW12063923F Resistor 1206 392kΩ 1% 1 Vishay
Rfb1 CRCW12061002F Resistor 1206 10kΩ 1% 1 Vishay
Rfb2 CRCW12061002F Resistor 1206 10kΩ 1% 1 Vishay
Rcs CRCW1206222J Resistor 1206 2.2kΩ 5% 1 Vishay
Table 2. Bill of Materials for Circuit of Figure 25
(Identical to BOM for 1.5V except as noted below)
ID Part Number Type Size Parameters Qty. Vendor
L1 RLF12560T-2R7N110 Inductor 12.5x12.8x6mm 2.7µH, 14.4A 4.5mΩ 1 TDK
Co1, Co2,
10TPB100M POSCAP 7.3x4.3x2.8mm 100µF 10V 1.9Arms 4 Sanyo
Co3, Co4
Cc1 VJ1206A6R8KXX Capacitor 1206 6.8pF 10% 1 Vishay
Cc2 VJ1206A271KXX Capacitor 1206 270pF 10% 1 Vishay
Cc3 VJ1206A471KXX Capacitor 1206 470pF 10% 1 Vishay
Rc2 CRCW12068451F Resistor 1206 8.45kΩ 1% 1 Vishay
Rfb1 CRCW12061102F Resistor 1206 11kΩ 1% 1 Vishay
Table 3. Bill of Materials for Circuit of Figure 26
ID Part Number Type Size Parameters Qty. Vendor
Synchronous Texas
U1 LM2727 TSSOP-14 1
Controller Instruments
Q1 Si4442DY N-MOSFET SO-8 30V, 4.1mΩ, @ 4.5V, 36nC 1 Vishay
Q2 Si4442DY N-MOSFET SO-8 30V, 4.1mΩ, @ 4.5V, 36nC 1 Vishay
D1 BAT-54 Schottky Diode SOT-23 30V 1 Vishay
Lin SLF12575T-1R2N8R2 Inductor 12.5x12.5x7.5mm 12µH, 8.2A, 6.9mΩ 1 Coilcraft
L1 D05022-152HC Inductor 22.35x16.26x8mm 1.5µH, 15A,4mΩ 1 Coilcraft
Aluminum
Cin1, Cin2 10MV5600AX 16mm D 25mm H 5600µF10V 2.35Arms 2 Sanyo
Electrolytic
Cinx C3216X7R1E105K Capacitor 1206 1µF, 25V 1 TDK
Co1, Co2, Aluminum
10MV5600AX 16mm D 25mm H 5600µF10V 2.35Arms 2 Sanyo
Co3 Electrolytic
Cboot VJ1206X104XXA Capacitor 1206 0.1µF, 25V 1 Vishay
Cin C3216X7R1E225K Capacitor 1206 2.2µF, 25V 1 TDK
Css VJ1206X123KXX Capacitor 1206 12nF, 25V 1 Vishay
Cc1 VJ1206A4R7KXX Capacitor 1206 4.7pF 10% 1 Vishay
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