SY7076QMC

SY7076 2V Minimum Input and 5. 5V Maximum Output 6A Peak Current Synchronous Boost with output current limit General Description Features SY7076 is a high efficiency synchronous boost regulator that converts down to 2V input and up to 5.5V output voltage. It adopts NMOS for the main switch and PMOS for the synchronous switch. It can disconnect the output from input during the shutdown mode. It can program output current limit by ILIM pin. • Ordering Information • • • • • SY7076 □(□□)□ • Temperature Code Package Code Optional Spec Code Package type QFN2x2-10 • • • Note ---- • 2V Minimum input voltage Adjustable output voltage from 2.5V to 5.5V 6A peak current limit Input under voltage lockout Load disconnect during shutdown Programmable output current limit protection ±10% output current limit accuracy Force PWM mode selectable Hic-cup mode for short protection Low RDS(ON) (main switch/synchronous switch) at 5.0V output: 20/40mΩ Output OVP protection Compact package QFN2x2-10 package Applications 导 小 芯 Ordering Number SY7076QMC • All Single Cell Li or Dual Cell Battery Operated Products as MP-3 Player, PDAs, and Other Portable Equipment. l-F or 半 • Typical Applications en tia Efficiency, PFM mode 100 MODE SOUT IN 98 VOUT=5V on Li-on Battery Input L 1.5uH yC CIN 22uF×2 Sil erg 0Ω LX POUT RH 470k ILIM FB CILIM 10nF RILIM 50kΩ RL 148.4k EN PGND SGND COUT 22uF×3 Efficiency (%) 1uF fid 1uF 96 94 92 90 VIN=2.5V, VOUT=5V VIN=3.3V, VOUT=5V VIN=4.2V, VOUT=5V 88 86 Note: The minimum recommended value for CILIM is 10nF. 0.001 0.01 0.1 1 10 Load Current (A) Figure 1. Schematic Diagram SY7076 Rev. 0.9 © 2018 Silergy Corp. Figure 2. Efficiency vs. Load Current Silergy Corp. Confidential- Prepared for Customer Use Only All Rights Reserved. 1 SY7076 Pinout (top view) 10 9 FB ILIM 1 8 MODE POUT 2 LX 3 PGND 7 EN SOUT 6 IN 5 SGND 4 (QFN2x2-10) Top mark: Fnxyz (Device code: Fn, x=year code, y=week code, z= lot number code) Description MODE 8 ILIM 9 FB 10 芯 7 导 小 EN 半 6 l-F or SOUT Power output pin. Decouple this pin to GND pin with at least 2pcs 22uF ceramic cap. Inductor node. Connect an inductor between IN pin and LX pin. Power ground pin. Signal ground pin. Signal input pin. Decouple this pin to GND with at least 4.7uF ceramic cap. Signal output pin. Decouple this pin to GND pin with at least 1uF ceramic cap for noise immunity consideration. Enable pin. Internal integrated with 1MΩ pull down resistor. PFM/PWM select pin. Low for auto PFM/PWM mode. High for force PWM mode. Internal integrated with 1MΩ pull down resistor. Current limit program pin, program output current limit by connecting resister and capacitor parallel network to ground. ILIM(A)=100k/RILIM(Ω). CILIM must be large than 10nF. Feedback pin. Connect a resistor R1 between OUT and FB, and a resistor R2 between FB and GND to program the output voltage. VOUT=1.2V× (RH/RL+1). tia 1 2 3 4 5 Sil erg yC on fid en Name POUT LX PGND SGND IN SY7076 Rev. 0.9 © 2018 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only All Rights Reserved. 2 SY7076 Block Diagram MODE SOUT VCC IN Output current sense IN SOUT IN ILIM GM POUT VCC Supply ZC2 1.2V Ref TG FB GM WELL SWITCH PWM Control LX BG ZC1 1.2V Ref SGND Current Sense PGND Enable control 芯 EN 半 导 小 Figure 3. Block Diagram l-F or Absolute Maximum Ratings (Note 1) yC on fid en tia LX--------------------------------------------------------------------------------------------------------------- -----------------8.0V All other Pins-------------------------------------------------------------------------------------------------------------------6.0V Power Dissipation, PD@ TA=25°C, QFN2x2-10--------------------------------------------------------------------------2.5W Package Thermal Resistance (Note 2) θ JA ----------------------------------------------------------------------------------------------- ----------------50°C/W θ JC ---------------------------------------------------------------------------------------------------------------10°C/W Junction Temperature Range --------------------------------------------------------------------------------------------- 150°C Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------------- 260°C Storage Temperature Range ----------------------------------------------------------------------------------- -65°C to 150°C Sil erg Recommended Operating Conditions (Note 3) IN --------------------------------------------------------------------------------------------------------------------- 2.0V to 5.5V OUT------------------------------------------------------------------------------------------------------------------- 2.5V to 5.5V All other pins --------------------------------------------------------------------------------------------------------------- 0-5.5V Junction Temperature Range ---------------------------------------------------------------------------------- -40°C to 125°C Ambient Temperature Range ----------------------------------------------------------------------------------- -40°C to 85°C SY7076 Rev. 0.9 © 2018 Silergy Corp. Silergy Corp. Confidential- Prepared for Customer Use Only All Rights Reserved. 3 SY7076 Electrical Characteristics (VIN =3.0V, VOUT=4.2V, IOUT=500mA, TA = 25°C unless otherwise specified) Symbol VIN VOUT IQ Min 2 2.5 Io=0A,VEN=VIN=3.0V, VOUT=5.0V VEN=0V, VIN=3.0V VOUT