RT6160A RICHTEK | Alldatasheet
Document overview
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Technical content
Features
⚫ Automatic Seamless Mode Transition with Real Buck, Buck-Boost and Boost Operation ⚫ Input Voltage Range : 2.2V to 5.5V ⚫ Output Voltage Range : 2.025V to 5.2V with Digitally Programmable (25mV/steps) ⚫ Default Output Voltage Setting : VOUT = 3.3V at VSEL = L VOUT = 3.45V at VSEL = H ⚫ Maximum Continuous Output Current : Up to 2.5A for VIN ≥ 2.5V, VOUT = 3.3V Up to 3A for VIN ≥ 3V, VOUT = 3.3V Up to 2A for VIN ≥ 3V, VOUT = 5V ⚫ Up to 95% Efficiency (VIN = 3.8V, VOUT = 3.3V, ILOAD = 1A) ⚫ 1A Non-Switching Low Quiescent Current ⚫ I2C Interface (Up to 1MHz) ⚫ Allows Dynamically-Voltage-Scaling Control ⚫ Automatic PFM Mode and Forced PWM Mode Selection ⚫ Ultra-Sonic Mode Operation ⚫ OCP, UVLO, OTP, OVP, UVP Protected Function for Robustness ⚫ 15-Ball WL-CSP Package
Applications
⚫ Smartphones and Tablets ⚫ Portable Devices ⚫ Wearable Devices ⚫ System Pre-Regulators ⚫ Point-of-Load Regulators ⚫ Wifi Module ⚫ USB VCONN Supplies ⚫ TWS Earbud Chargers
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6160A-02 July 202 3 Simplified Application Circuit VIN RT6160A VOUT SCL AGND EN VIN PGND SDA VOUT VSEL LX1 LX2 COUTCIN
Ordering Information
WSC : WL-CSP-15B 1.4x2.3 (BSC) Note: Richtek products are Richtek Green Policy compliant and compatible with the current requirements of IPC/JEDEC J -STD -020. Marking Information 7R : Product Code W : Date Code 7RW Pin Configuration (TOP VIEW) AGND SDA PGND LX2 VOUT SCL VIN LX2 VOUT EN VIN LX1VSEL LX1 PGND C1 C2 C3 D3D1 E1 E2 E3 A1 A2 A3 B3B1 B2 WL-CSP-15B 1.4x2.3 (BSC) Functional Pin Description Pin No. Pin Name Pin Function A1 EN Enable control input. A logic -high enables the converter; a logic -low forces the device into shutdown mode. A2, A3 VIN Power input . The input voltage range is from 2.2V to 5.5V after soft -start is finished. Connect input capacitors between this pin and PGND with minimal path. It is recommended to use a 10F/6.3V/X5R/0402 and a 0.1 F/6.3V/X5R/0201 ceramic capacitors. B1 VSEL Voltage select pin. When this pin is tie to ground , V OUT is set by the VOUT1 register; tie to logic-high, VOUT is set by the VOUT2 register. B2, B3 LX1 Switching node 1. Connect to the inductor. C1 AGND Analog ground. All signals are referenced to this pin. Avoid routing high dV/dt AC currents through this pin. C2, C3 PGND Power ground. The low -side MOSFET is referenced to this pin. C IN and COUT should be returned with a minimal path to these pins.
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. D1 SCL I2C serial interface clock. This pin requires a pull-up resistor to I2C power supply. D2, D3 LX2 Switching node 2. Connect to the inductor. E1 SDA I2C serial interface data. This pin requires a pull-up resistor to I2C power supply. recommended to use two 22F/10V/X5R/0603 ceramic capacitors. Figure 1. Buck Operation
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com Absolute Maximum Ratings (Note 1) ⚫ Power Dissipation, PD @ TA = 25C ⚫ Package Thermal Resistance (Note 2) ⚫ ESD Susceptibility (Note 3) Recommended Operating Conditions (Note 4)
Electrical Characteristics
(VIN = 3.6V, VOUT = 3.3V, TA = TJ = 25C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Input Operating Voltage VIN 2.2 -- 5.5 V Positive-Going UVLO Threshold Voltage VUVLO(POS) VIN rising 2.11 2.14 2.19 V Negative-Going UVLO Threshold Voltage VUVLO(NEG) 2.02 2.05 2.08 V UVLO Threshold Voltage Hysteresis VUVLO(HYS) -- 90 -- mV Quiescent Current IQ_SW VEN = VIN = 3.6V, IOUT = 0A -- 2 4 IQ_NON-SW VEN = VIN = 3.6V, IOUT = 0A, not switching -- 1 2 Shutdown Current ISHDN VEN = 0V, VIN = 3.6V -- 0.1 1 A
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6160A-02 July 202 3 Parameter Symbol Test Conditions Min Typ Max Unit High-Level Input Current IIH VSCL = VSDA = VSEL = 1.8V, no pull-up resistor -- -- 0.1 A Low-Level Input Current IIL VSCL = VSDA = VSEL = 0V, no pull-up resistor -- -- 0.1 A Input Bias Current IIB VEN = 0 to 5.5V -- -- 0.1 A High-Side Switch Leakage Current IHS_LK VEN = 0V, VSW = 0V -- 1 -- A High-Side Switch On-Resistance RDS(ON)_H -- 25 -- m Low-Side Switch On-Resistance RDS(ON)_L -- 38 -- m Output Discharge Resistor R_DIS_OUT VEN = 0V -- 5 -- Enable Input High Threshold VENH VIN = 2.2V to 5.5V 1.2 -- -- V Enable Input Low Threshold VENL VIN = 2.2V to 5.5V -- -- 0.4 V (SCL, SDA, VSEL) Input High Threshold VIH 1.2 -- -- V (SCL, SDA, VSEL) Input Low Threshold VIL -- -- 0.4 Output Voltage Range VOUT 2.025 -- 5.2 V Default Output Voltage VSEL_L VSEL = low -- 3.3 -- V VSEL_H VSEL = high -- 3.45 -- Output Voltage Accuracy ACC_Forced Forced PWM operation −1 -- 1 % ACC_AUTO Auto PFM operation −1 -- 3 ACC_USC Ultra-Sonic operation −1 -- 3 Line Regulation VOUT_LINE_ REG (Note 6) -- 0.5 -- % Load Regulation VOUT_LOAD_ REG (Note 6) -- 0.5 -- % Maximum Continuous Output Current IOUT_MAX VIN 2.5V, VOUT = 3.3V, L = 0.47H, CIN = 10F, COUT = 44F (Note 7) 2.5 -- -- A VIN 3V, VOUT = 3.3V, L = 0.47H, CIN = 10F, COUT = 44F (Note 7) 3 -- -- High-Side MOSFET Peak Current Limit ILIM_P VIN = 3.6V, VOUT = 3.3V 4.5 5 5.5 A Low-Side MOSFET Valley Current Limit ILIM_V VIN = 3.6V, VOUT = 3.3V 4 4.5 5 A PFM to PWM Threshold Inductor Current IL_T_PFM VIN = 3.6V, VOUT = 3.3V, L = 0.47H, CIN = 10F, COUT = 44F -- 0.3 -- A
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com Parameter Symbol Test Conditions Min Typ Max Unit Efficiency Eff VIN = 3.3V, VOUT = 3.3V, IOUT = 0.1A, L = 0.47H, CIN = 10F, COUT = 44F, Auto PFM operation -- 95 -- VIN = 3.3V, VOUT = 3.3V, IOUT = 1A, L = 0.47H, CIN = 10F, COUT = 44F, Forced PWM operation -- 94 -- VIN = 3.8V, VOUT = 3.3V, IOUT = 0.1A, L = 0.47H, CIN = 10F, COUT = 44F, Auto PFM operation -- 94 -- VIN = 3.8V, VOUT = 3.3V, IOUT = 1A, L = 0.47H, CIN = 10F, COUT = 44F, Forced PWM operation -- 95 -- Output Ripple Voltage VOUT_RIPPLE VIN = 3.3V, VOUT = 3.3V, IOUT = 0.1A, L = 0.47H, CIN = 10F, COUT = 44F, Auto PFM operation (Note 6) -- 50 -- mV VIN = 3.3V, VOUT = 3.3V, IOUT = 1A, L = 0.47H, CIN = 10F, COUT = 44F, Forced PWM operation (Note 6) -- 20 -- VIN = 3.8V, VOUT = 3.3V, IOUT = 0.1A, L = 0.47H, CIN = 10F, COUT = 44F, Auto PFM operation (Note 6) -- 25 -- VIN = 3.8V, VOUT = 3.3V, IOUT = 1A, L = 0.47H, CIN = 10F, COUT = 44F, Forced PWM operation (Note 6) -- 10 -- Load Transient Response VOUT_LOAD_ TRANSIENT VIN = 3.8V, VOUT = 3.3V, IOUT = 0.05A to 1A, tR = tF = 1s (Note 6) −100 -- 100 mV VIN = 3.8V, VOUT = 3.3V, IOUT = 0.05A to 0.5A, tR = tF = 1s (Note 6) −50 -- 50 Line Transient Response VOUT_LINE_ TRANSIENT IOUT = 1A, VIN = 3V to 3.6V to 3V, tR = tF = 10s (Note 6) −50 -- 50 mV Switching Frequency fSW Boost or Buck operation -- 2.2 -- MHz Switching Frequency Range fSW_RANGE Forced PWM operation, IOUT = 100mA 0.5 -- 3 MHz Switching Frequency at Ultra- Sonic Mode fSW_USC IOUT = 1mA 30 -- -- kHz
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6160A-02 July 202 3 Parameter Symbol Test Conditions Min Typ Max Unit Minimum On-Time tON_MIN 20 -- 60 ns Minimum Off-Time tOFF_MIN 20 -- 60 ns Output Voltage Rising Time tR(SS) Output voltage ramp to output voltage 95%, L = 0.47H, CIN = 10F, COUT = 44F -- 300 1000 s Enable Delay Time tD(EN) Enable pin logic-high to output voltage ramp, L = 0.47H, CIN = 10F, COUT = 44F -- 220 300 s VSEL Delay Time tD(VSEL) Delay between rising edge of VSEL and start of DVS ramp -- 30 -- s Positive-Going Under-Voltage Threshold Voltage UVP+ -- 95 -- % Negative-Going Under-Voltage Threshold Voltage UVP- -- 90 -- % Output Voltage Dynamic Voltage Scaling Slew Rate DVS_SR 0x01, bit[1:0] = 00b 0.8 1 1.2 V/ms 0x01, bit[1:0] = 01b 2 2.5 3 0x01, bit[1:0] = 10b 4 5 6 0x01, bit[1:0] = 11b 8 10 12 Thermal Shutdown TSD (Note 6) 140 150 160 C Thermal Shutdown Hysteresis TSD (Note 6) -- 20 -- C I2C Characteristics Parameter Symbol Test Conditions Min Typ Max Unit Logic Output Threshold Voltage (SCL, SDA, VSEL) VI2COL -- -- 0.4 V I2C Work Voltage VI2Cint -- 1.8 -- V Input Current Each IO Pin IIN_I2C −10 -- 10 A Data Set-Up Time tDS_I2C 70 -- -- ns SCL Clock Frequency fCLK Standard mode -- -- 100 kHz Fast mode -- -- 400 Fast mode plus -- -- 1000 Bus Free Time between Stop and Start Condition tBUF Standard mode 4.7 -- -- s Fast mode 1.3 -- -- Fast mode plus 0.5 -- -- Hold Time (Repeated) START Condition tHD;STA Standard mode 4.7 -- -- s Fast mode 0.6 -- -- Fast mode plus 0.26 -- --
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com Parameter Symbol Test Conditions Min Typ Max Unit Set-Up Time for a Repeated START Condition tSU;STA Standard mode 4.7 -- -- s Fast mode 0.6 -- -- Fast mode plus 0.26 -- -- Data Hold Time tHD;DAT Standard mode 0.1 -- -- ns Fast mode 0.1 -- -- Fast mode plus 0.1 -- -- Set-Up Time for STOP Condition tSU;STO Standard mode 4 -- -- s Fast mode 0.6 -- -- Fast mode plus 0.26 -- -- Data Valid Acknowledge Time tVD;ACK Standard mode -- -- 3.45 s Fast mode -- -- 0.9 Fast mode plus -- -- 0.45 SDA Set-Up Time tSU;DAT Standard mode 250 -- -- ns Fast mode 100 -- -- Fast mode plus 50 -- -- Low Period of the SCL Clock tLOW Standard mode 4.7 -- -- s Fast mode 1.3 -- -- Fast mode plus 0.5 -- -- High Period of the SCL Clock tHIGH Standard mode 4 -- -- s Fast mode 0.6 -- -- Fast mode plus 0.26 -- -- Note 1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may affect device reliability. Note 2. JA is measured under natural convection (still air) at TA = 25°C with the component mounted on a high effective-thermal- conductivity four-layer test board on a JEDEC 51-7 thermal measurement standard. Note 3. Devices are ESD sensitive. Handling precautions are recommended. Note 4. The device is not guaranteed to function outside its operating conditions. Note 5. Effective capacitance after DC bias effects have been considered. Note 6. Guaranteed by design. Note 7. The device can sustain the maximum recommended output current, Users must verify that the thermal performance of the end application can support the maximum output current.
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Table 1. Recommended Components Information (Note 8) rating effect, like a DC bias. and used to filter any high frequency component on VIN bus.
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com Typical Operating Characteristics Quiescent Current vs. Input Voltage 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Input Voltage (V) Quiescent Current (μA) Switching VOUT = 3.3V, TA = 25°C (Auto PFM Mode) Non-switching Efficiency vs. Output Current 100 Output Current (A) Efficiency (%) VIN = 3.6V, TA = 25°C (Auto PFM Mode) VOUT = 3.3V VOUT = 5.2V VOUT = 2.025V Efficiency vs. Input Voltage 100 Input Voltage (V) Efficiency (%) IOUT = 1A, TA = 25°C (Auto PFM Mode) VOUT = 2.025V VOUT = 5.2V VOUT = 3.3V Line Regulation -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 0.15 0.20 0.25 Input Voltage(V) Output Voltage Regulation (%) 1 IOUT = 1A, TA = 25°C (Auto PFM Mode) VOUT = 2.025V VOUT = 3.3V VOUT = 5.2V Load Regulation (Auto PFM Mode) -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Output Current (A) Output Voltage Regulation (%) 1 VIN = 3.6V, TA = 25°C (Auto PFM Mode) VOUT = 5.2V VOUT = 3.3V VOUT = 2.025V Load Regulation (FPWM Mode) 0.00 0.05 0.10 0.15 0.20 0.25 Output Current (A) Output Voltage Regulation (%) 1 VIN = 3.6V, TA = 25°C (FPWM Mode) VOUT = 2.025V VOUT = 5.2V VOUT = 3.3V
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6160A-02 July 202 3 VIN = 5.5V, VOUT = 3.3V, IOUT = 100mA LX1 (5V/Div) VOUT (50mV/Div) PFM Switching Waveforms (Buck Operation) Time (2s/Div) Auto PFM Mode LX2 (5V/Div) ILX (500mA/Div) LX1 LX2 VOUT (50mV/Div) ILX (500mA/Div) PFM Switching Waveforms (Buck-Boost Operation) Time (2s/Div) Auto PFM Mode LX1 (5V/Div) LX2 (5V/Div) LX1 LX2 VIN = 3.3V, VOUT = 3.3V, IOUT = 100mA LX2 (5V/Div) ILX (500mA/Div) PFM Switching Waveforms (Boost Operation) Time (2s/Div) VIN = 2.2V, VOUT = 3.3V, IOUT = 100mA LX1 (5V/Div) VOUT (50mV/Div) LX1 LX2 Auto PFM Mode LX2 (5V/Div) ILX (500mA/Div) Time (2s/Div) PWM Switching Waveforms (Buck Operation) VIN = 5.5V, VOUT = 3.3V, IOUT = 100mA, LX1 (5V/Div) VOUT (50mV/Div) LX1 LX2 FPWM Mode LX2 (5V/Div) ILX (500mA/Div) FPWM Mode PWM Switching Waveforms (Buck-Boost Operation) Time (2s/Div) LX1 (5V/Div) VOUT (50mV/Div) LX1 LX2 VIN = 3.3V, VOUT = 3.3V, IOUT = 100mA LX2 (5V/Div) ILX (500mA/Div) PWM Switching Waveforms (Boost Operation) Time (2s/Div) FPWM Mode LX1 (5V/Div) VOUT (50mV/Div) LX1 LX2 VIN = 2.2V, VOUT = 3.3V, IOUT = 100mA
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com VOUT (50mV/Div) VIN (2V/Div) Time (200s/Div) Line Transient Response (Light Load) VIN = 2.5V, VOUT = 5V, IOUT = 1.5A to 3A L = 1.5H (TDK SPM6530), COUT = 22F x 2 Slew rate = 100mA/μs VOUT = 3.3V, IOUT = 0.2A,TA = 25°C, Auto PFM Mode VIN = 2.2V to 5.5V to 2.2V, tR = tF = 10s VIN (2V/Div) VOUT (50mV/Div) Time (200s/Div) Line Transient Response (Heavy Load) VOUT = 3.3V, IOUT = 1A,TA = 25°C, Auto PFM Mode VIN = 2.2V to 5.5V to 2.2V, tR = tF = 10s VIN (500mV/Div) VOUT (20mV/Div) Line Transient Response (SPEC Condition) Time (200s/Div) VIN = 4.2V, VOUT = 5V, IOUT = 1.5A to 3A L = 1.5H (TDK SPM6530), COUT = 22F x 2 Slew rate = 100mA/μs VOUT = 3.3V, IOUT = 1A,TA = 25°C, Auto PFM Mode VIN = 3V to 3.6V to 3V, tR = tF = 10s IOUT (1A/Div) VOUT (200mV/Div) Time (200s/Div) Load Transient Response (Buck) VIN = 4.2V, VOUT = 3.3V,TA = 25°C, Auto PFM Mode IOUT = 0.01A to 2A to 0.01A, tR = tF = 1s Time (200s/Div) Load Transient Response (Buck-Boost) IOUT (1A/Div) VOUT (200mV/Div) VIN = 3.3V, VOUT = 3.3V,TA = 25°C, Auto PFM Mode IOUT = 0.01A to 2A to 0.01A, tR = tF = 1s Time (200s/Div) Load Transient Response (Boost) IOUT (1A/Div) VOUT (200mV/Div) VIN = 2.6V, VOUT = 3.3V,TA = 25°C, Auto PFM Mode IOUT = 0.01A to 2A to 0.01A, tR = tF = 1s
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6160A-02 July 202 3 IOUT (500mA/Div) VOUT (50mV/Div) Load Transient Response (SPEC Condition1) Time (200s/Div) VIN = 3.8V, VOUT = 3.3V,TA = 25°C, Auto PFM Mode IOUT = 0.05A to 1A to 0.05A, tR = tF = 1s VOUT (50mV/Div) IOUT (500mA/Div) Load Transient Response (SPEC Condition2) Time (200s/Div) IOUT = 0.05A to 0.5A to 0.05A, tR = tF = 1s VIN = 3.8V, VOUT = 3.3V,TA = 25°C, Auto PFM Mode ILX (1A/Div) VIN (2V/Div) Start-Up Waveforms (Light Load) Time (200s/Div) RLOAD = 33,TA = 25°C, Auto PFM Mode VIN = 3.6V, VOUT = 3.3V VOUT (1V/Div) EN (2V/Div) VINEN VOUT (1V/Div) ILX (1A/Div) Time (200s/Div) Start-Up Waveforms (Heavy Load) RLOAD = 3.3,TA = 25°C, Auto PFM Mode VIN = 3.6V, VOUT = 3.3V VIN (2V/Div) EN (2V/Div) VINEN DVS Slew Rate : 1V/ms VSEL (1V/Div) VOUT (50mV/Div) Dynamic Voltage Scaling (RPWM Function Disable) Time (2ms/Div) RLOAD = 330,TA = 25°C,VIN = 3.6V, VOUT = 2.5V to 4.5V to 2.5V ILX (1A/Div) ILX (1A/Div) VOUT (50mV/Div) Dynamic Voltage Scaling (RPWM Function Enable) Time (2ms/Div) DVS Slew Rate : 1V/ms RLOAD = 330,TA = 25°C,VIN = 3.6V, VOUT = 2.5V to 4.5V to 2.5V VSEL (1V/Div)
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com ILX (1A/Div) VOUT (50mV/Div) Line Sweep (Auto PFM Mode) Time (200s/Div) VOUT = 3.3V, RLOAD = 10,TA = 25°C, VIN = 2.2V to 5.5V to 2.2V VIN (1V/Div) ILX (1A/Div) VOUT (50mV/Div) Time (200s/Div) Line Sweep (FPWM Mode) VOUT = 3.3V, RLOAD = 10,TA = 25°C, VIN = 2.2V to 5.5V to 2.2V VIN (1V/Div) ILX (2A/Div) VOUT (1V/Div) Output Short-Circuit Behavior Time (10ms/Div) VIN = 3.6V, VOUT = 3.3V, Auto PFM Mode Output Voltage Accuracy 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Output Voltage (V) Output Voltage Accuracy (%) 1 VIN = 3.6V, IOUT = 0A, Temp = −40/25/85°C, Auto PFM Mode Temp = 85°C Temp = 25°C Temp = −40°C Switching Frequency vs. Input Voltage 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Input Voltage (V) Switching Frequency (MHz) 1 IOUT = 1A, VIN rising, TA = 25°C, Auto PFM Mode VOUT = 2.025V VOUT = 5.2V VOUT = 3.3V Maximum Output Current vs. Input Voltage Input Voltage (V) Maximum Output Current (A) 1 TA = 25°C, Auto PFM Mode VOUT = 2.025V VOUT = 3.3V VOUT = 5.2V
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com FPWM (Forced Pulse Width Modulation) Mode The switching frequency is forced into PWM mode operation. In this mode, the inductor current is in CCM (Continuous Current Mode) and the voltage is regulated by PWM. To enable Forced-PWM operation, set the FPWM bit in the Control register to 1. Ultra-Sonic Mode To avoid acoustic noise problem when operation, the switching frequency is designed to be always higher than 30kHz even there is no load at output. To enable Ultra -Sonic Mode operation, set the Ultra - Sonic Mode bit in the Control register to 1. Ramp-PWM Function If Ramp-PWM function is enabled, the device operates in forced-PWM when it ramps from one output voltage to another during dynamic voltage scaling. This function is useful if you want the device to operate in Auto PFM Mode but you w ant to make sure that dynamic voltage scaling ramps the output voltage up and down in a controlled way. If the device operates in Auto PFM Mode and Ramp-PWM is disabled, the devices cannot always control the ramp from a higher output voltage to a lower out put voltage, because in Automatic PFM/PWM Mode the devices cannot sink current. To enable Ramp-PWM function, set the RAMP bit in the control register to 1. To disable Ramp-PWM function, clear the RAMP bit in the control register to 0. Dynamically Voltage Scaling Control The RT6160A supports programmable slew-rate control feature when increasing and decreasing the output voltage, as known as Dynamically Voltage Scaling (DVS). The ramp slew -rate can be set to 1V/ms, 2.5V/ms, 5V/ms or 10V/ms through bit1 and bit0 of control register. Moreover, the operation mode during DVS region can be adjusted through control register bit2. When the device operates in Auto PFM/PWM mode, if the bit2 is set to 1, the device will change to Forced PWM mode operation during DVS region and back to auto PFM/PWM mode after reaching target output voltage. And the device will keep auto PFM/PWM mode during DVS region if the bit2 of control register is set to Output Discharge The device actively discharges the output when the EN pin is low. VOUT Selection The RT6160A has programmable VOUT from 2.025V to 5.2V with 25mV resolution. The output voltage can be set by VOUTx register bit and the output voltage is given by the following equation : VOUT = 2.025V + VOUTx x 25mV For example : if VOUTx = 110011 (51 decimal), then The RT6160A also has external VSEL pin to select VOUT1(0X04) or VOUT2(0X05). Pulling VSEL to high is for VOUT2 and pulling VSEL to low is for VOUT1. Upon POR, VOUT1 and VOUT2 are reset to their default voltages. Power-Good Comparator When a power -not-good condition occurs, the device sets the PG bit in the Status register to 1. The device clears the PG bit to 0 if you read the Status register when a power-good condition exists. Auto-Zero Current Detector The auto-zero current detector circuit senses the LX1 and LX2 waveform to adjust the zero current threshold voltage. When the current of low side MOSFET decrease to the zero current threshold. The low -side MOSFET turns off to prevent negative inductor current. In this way, the zero current threshold can adjust for different condition to get better efficiency. Load Disconnect During device shutdown, the input is disconnected from the output. This prevents any current flow from the output to the input or from the input to the output.
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6160A-02 July 202 3 PWM Frequency and Adaptive On-Time Control The on-time can be roughly estimated by the equation : OUTO N SW N I V 1= Vt f where fSW is nominal 2.2MHz. Inductor Selection Inductor value choose will effect transient, ripple and other performance. The RT6160A recommended nominal inductance value is 0.47 H to achieve advantage performance. The inductor value and operating frequency determine the ripple current accor ding to a specific input and output voltage. The ripple current IL increases with higher VIN and decreases with higher inductance. OUT OUTL SW IN VVI = 1 fL V Having a lower ripple current reduces not only the ESR losses in the output capacitors but also t he output voltage ripple. High frequency with small ripple current can achieve the highest efficiency operation. However, it requires a large inductor to achieve this goal. For the ripple current selection, the value of IL which is IMAX multiplied by 0.3 will be a reasonable starting point. The largest ripple current occurs at the highest VIN. To guarantee that the ripple current stays below the specified maximum, the inductor value should be chosen according to the following equation : ( ) ( ) OUT OUT SW L MAX IN MAX VVL = 1 f I V The inductor's current rating (caused a 40 C temperature rising from 25 C ambient) should be greater than the maximum load current and its saturation current should be greater than the short circuit peak current limit. Input Capacitor Selection Steady state and transient response operation performance also depend on input voltage stability or not. The RT6160A at least a 10 F input capacitor is recommended to prevent input voltage instability with application operation. And that suggest placed as close as possible to the VIN and GND pins of the IC is recommended. If the input supply is more than a few centimeters from the device, we recommend you add some bulk capacitance to the ceramic bypass capacitors. A 47 F electroly tic capacitor is a typical selection for the bulk capacitance. Output Capacitor Selection The ripple voltage is an important index for choosing output capacitor. This portion consists of two parts. One is the product of ripple current with the ESR of the output capacitor, while the other part is formed by the charging and discharging process of the output capacitor. Output capacitor is selected according to output ripple which is calculated as below equation. ∆VOUT = ∆VESR + ∆VOUTCAP ∆VESR = ICRMS × RCESR ∆VOUTCAP = IOUT × Duty fSW × CMIN User can use equation choose capacitor to meeting systems ripple specification. And at least 22 F x 2 capacitors is recommended to matching application with VOUT ripple request and stability performance.
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Table 2. Protection Trigger Condition and Behavior described the protection actions. Note 11. Turn off all switches when OCP event occurs and is continuing for 2ms. time of the internal network. the device will resume switching. junction temperature of the device is less than 130C. and resume normal operation.
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Figure 7. Layout Guide
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. The following table shows the RT6160A slave address 0x75(7bit). individually. The I2C timing diagrams are listed below. Figure 8. I2C Read and Write Stream and Timing Diagram
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com Register Table Lists Name Address Description CONTROL 0x01 Output pull-down slew rate control MODE function control DVS slew rate function control STATUS 0x02 Read IC status DEVID 0x03 Device Identity VOUT1 0x04 Output Voltage 1 when the VSEL pin is low VOUT2 0x05 Output Voltage 2 when the VSEL pin is High Register Description I2C Slave address = 1110101 (75H) I2C Register Map R : Read Only RW : Read and Write Address 0x01 CONTROL Bits 7 6 5 4 3 2 1 0 Name Reserved I2C_SDA_SLEW Ultra-Sonic Mode Forced PWM Ramp PWM DVS Slew Rate Reset 0 0 0 0 0 0 0 0 Type R R/W R/W R/W R/W R/W R/W R/W Address 0x02 STATUS Bits 7 6 5 4 3 2 1 0 Name Reserved HD UV OC TSD PG Reset 0 0 0 0 0 0 0 0 Type R R R R R R R R Address 0x03 DEVID Bits 7 6 5 4 3 2 1 0 Name Manufacturer Major Minor Reset 1 0 1 0 1 0 0 0 Type R R R R R R R R Address 0x04 VOUT1 Bits 7 6 5 4 3 2 1 0 Name Reserved VOUT1 Reset 0 0 1 1 0 0 1 1 Type R R/W R/W R/W R/W R/W R/W R/W Address 0x05 VOUT2 Bits 7 6 5 4 3 2 1 0 Name Reserved VOUT2 Reset 0 0 1 1 1 0 0 1 Type R R/W R/W R/W R/W R/W R/W R/W
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6160A-02 July 202 3 Address Register Name Bit Bit Name Default Type Description 0x01 CONTROL
7 Reserved 0 R Reserved
6:5 I2C_SDA_SLEW 00 R/W SDA pin output pull-down slew rate 00 : High (default) 01 : Medium 10 : Low 11 : Very low
4 Ultra-Sonic
This bit controls the ultra-sonic mode function. 0 : Ultra-Sonic mode disabled (default) 1 : Ultra-Sonic mode enabled
3 Forced PWM 0 R/W
This bit controls the forced-PWM mode function. 0 : Forced PWM operation disabled (default) 1 : Forced PWM operation enabled
2 Ramp PWM 0 R/W
This bit controls the ramp-PWM function. 0 : Ramp-PWM operation disabled (default) 1 : Ramp-PWM operation enabled 1:0 DVS Slew Rate 00 R/W These bits control the slew rate of the DVS function. 00 : 1.0V/ms (default) 01 : 2.5V/ms 10 : 5.0V/ms 11 : 10.0V/ms Address Register Name Bit Bit Name Default Type Description 0x02 STATUS 7:5 Reserved 000 R Reserved
4 HD 0 R
This bit shows the status of the hot-die function. 0 : Normal operation (default) 1 : An hot-die event was detected
3 UV 0 R
This bit shows the status of the under voltage function. 0 : Normal operation (default) 1 : An under-voltage event was detected
2 OC 0 R
This bit shows the status of the over current function. 0 : Normal operation (default) 1 : An over-current event was detected
1 TSD 0 R
This bit shows the status of the thermal shutdown function. 0 : Temperature good (default) 1 : An over-temperature event was detected PG 0 R This bit shows the status of the power-good comparator. 0 : Power-good (default) 1 : A power-not-good was detected
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com Address Register Name Bit Bit Name Default Type Description 0x03 DEVID 7:4 Manufacturer 1010 R These bits identify the device manufacturer. 1010 : Richtek (default) 3:2 Major 10 R These bits identify the major silicon revision. 00 : A (initial silicon) 01 : B (first major revision) 10 : C (second major revision) (default) 11 : D (third major revision) 1:0 Minor 00 R These bits identify the minor silicon revision. 00 : 0 (initial silicon) (default) 01 : 1 (first minor revision) 10 : 2 (second minor revision) 11 : 3 (third minor revision) Address Register Name Bit Bit Name Default Type Description 0x04 VOUT1 6:0 VOUT1 0110011 R/W These bits set the output voltage when the VSEL pin is low. 0000000 : VOUT = 2.025V 0000001 : VOUT = 2.05V 0000010 : VOUT = 2.075V 0110011 : VOUT = 3.3V (default) 1111101 : VOUT = 5.15V 1111110 : VOUT = 5.175V 1111111 : VOUT = 5.2V Address Register Name Bit Bit Name Default Type Description 0x05 VOUT2 6:0 VOUT2 0111001 R/W These bits set the output voltage when the VSEL pin is High. 0000000 : VOUT = 2.025V 0000001 : VOUT = 2.05V 0000010 : VOUT = 2.075V 0111001 : VOUT = 3.45V (default) 1111101 : VOUT = 5.15V 1111110 : VOUT = 5.175V 1111111 : VOUT = 5.2V
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Table 3. Register VOUT1/VOUT2[6:0] vs. Output Voltage VOUT1 Address = 0x04, Output Voltage 1 when the VSEL pin is low. VOUT2 Address = 0x05, Output Voltage 2 when the VSEL pin is high.
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com Outline Dimension Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 0.500 0.600 0.020 0.024 A1 0.170 0.230 0.007 0.009 b 0.240 0.300 0.009 0.012 D 2.260 2.340 0.089 0.092 D1 1.600 0.063 E 1.360 1.440 0.054 0.057 E1 0.800 0.031 e 0.400 0.016 15B WL-CSP 1.4x2.3 Package (BSC)
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6160A-02 July 202 3 Footprint Information Package Number of Pin Type Footprint Dimension (mm) Tolerance e A B WL-CSP1.4x2.3-15(BSC) 15 NSMD 0.400 0.240 0.340 ±0.025 SMD 0.270 0.240
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com Packing Information Tape and Reel Data Package Type Tape Size (W1) (mm) Pocket Pitch (P) (mm) Reel Size (A) Units per Reel Trailer (mm) Leader (mm) Reel Width (W2) Min./Max. (mm) (mm) (in) WL-CSP 1.4x2.3 8 4 180 7 3,000 160 600 8.4/9.9 Tape Size W1 P B F ØJ H C, D and K are determined by component size. The clearance between the components and the cavity is as follows: - For 8mm carrier tape: 0.5mm max.
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6160A-02 July 202 3 Tape and Reel Packing Step Photo/Description Step Photo/Description Reel 7” 12 inner boxes per outer box Packing by Anti-Static Bag Outer box Carton A 3 reels per inner box Box A Container Package Reel Box Carton Size Units Item Size(cm) Reels Units Item Size(cm) Boxes Unit WL-CSP 1.4x2.3 7” 3,000 Box E 18.6*18.6*3.5 1 3,000 For Combined or Partial Reel.
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS6160A-02 July 202 3 www.richtek.com Packing Material Anti-ESD Property Richtek Technology Corporation 14F, No. 8, Tai Yuen 1st Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notic e at any time. Customers should obtain the latest relevant information and data sheets before placing orders and should verify tha t such information is current and complete. Richtek cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of th ird parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of R ichtek or its subsidiaries. Surface Resistance Aluminum Bag Reel Cover tape Carrier tape Tube Protection Band /cm2 104 to 1011 104 to 1011 104 to 1011 104 to 1011 104 to 1011 104 to 1011
Copyright © 2023 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. www.richtek.com DS6160A-02 July 202 3 Datasheet Revision History Version Date Description Item 02 2023/7/7 Modify Ordering Information on P2 Electrical Characteristics on P5 Note 3 on P9 Application Information on P16 Packing Information on P29, 30, 31