EP53A7LQ ENPIRION [Enpirion, Inc.], EP53A7LQ Datasheet
EP53A7LQ
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EP53A7LQ Summary of contents
Page 1
... V The VID pins can be changed on the fly for fast dynamic voltage scaling. EP53A7LQI further has the option to use an external voltage divider. The EP53A7xQI offers the optimal combination of very small solution footprint and advanced performance features ...
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... LLM ( Light load mode – “LLM”) pin. Logic-High enables automatic LLM/PWM and logic- 3 LLM low places the device in fixed PWM operation. VFB EP53A7LQI: Feed back pin for external resistor divider option EP53A7HQI: No Connect 5 VSENSE Sense pin for preset output voltages. Refer to application section for proper configuration. ...
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... PIN NAME Output voltage select. VS2 = pin 9, VS1 = pin 10, VS0 = pin 11. 9, 10, VS2, VS1, EP53A7LQI: Selects one of seven preset output voltages or an external resistor divider. 11 VS0 EP53A7HQI: Selects one of eight preset output voltages. (Refer to section on output voltage select for more details.) ...
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... Load Regulation OUT_LOAD ΔV Temperature Variation OUT_TEMPL Output Current I OUT Shut-down Current I SD EP53A7HQI Operating I Q Quiescent Current EP53A7LQI Operating I Q Quiescent Current OCP Threshold I LIM Feedback Pin Input I FB Current VS0-VS2, Pin Logic Low V VSLO VS0-VS2, Pin Logic High V ...
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... Load Current (mA) Efficiency vs. Load Current: V OUT top to bottom) = 3.3, 3.7, 4.3, 5.0V ©Enpirion 2009 all rights reserved, E&OE 01543 TEST CONDITIONS EP53A7LQI (VID only) EP53A7HQI (VID only) EP53A7LQI (VFB mode); Note 2 & ENABLE pin crosses its logic High threshold. UVLO_R =1.2V ...
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... Output Ripple 5.0V 1.2V, Load = 10mA IN OUT LLM enabled ©Enpirion 2009 all rights reserved, E&OE 01543 Start Up Waveform 3.3V; OUT Shut-down Waveform 3.3V; OUT 5mV/Div Output Ripple 11/11/2009 EP53A7LQI/EP53A7HQI = 5.0V 3.3V; IN OUT I = 1000mA; VID Mode LOAD = 5.0V 3.3V; IN OUT I = 1000mA, PWM LOAD = 5.0V 1.2V, IN OUT Load = 1A www ...
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... Output Ripple 3.3V 1.8V, Load = 10mA IN OUT LLM enabled 50mV/Div Output Ripple 3.3V 1.2V, Load = 10mA IN OUT LLM enabled ©Enpirion 2009 all rights reserved, E&OE 01543 EP53A7LQI/EP53A7HQI 5mV/Div Output Ripple 5.0V Load = 1A 5mV/Div Output Ripple 3.3V Load = 1A 5mV/Div Output Ripple 3.3V Load = 1A www ...
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... V IN Load stepped from 0mA to 1000mA ©Enpirion 2009 all rights reserved, E&OE 01543 = 3.3V Load Transient: V OUT Load stepped from 10mA to 1000mA, LLM enabled = 1.2V Load Transient: V OUT Load stepped from 10mA to 1000mA, LLM enabled 8 11/11/2009 EP53A7LQI/EP53A7HQI = 5.0V 3.3V IN OUT = 5.0V 1.2V IN OUT www.enpirion.com Rev:B ...
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... V IN Load stepped from 0mA to 1000mA ©Enpirion 2009 all rights reserved, E&OE 01543 = 1.2V Load Transient: V OUT Load stepped from 10mA to 1000mA, LLM enabled Load Transient 1.8V OUT Load stepped from 10mA to 1000mA, LLM enabled 9 11/11/2009 EP53A7LQI/EP53A7HQI = 3.7V 1.2V IN OUT = 3.3V 1.8V IN OUT www.enpirion.com Rev:B ...
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... E&OE 01543 LLM Mode Logic P-Drive Logic N-Drive Compensation Network (-) Error Amp (+) DAC VREF AVIN AGND Figure 5: Functional Block Diagram 10 11/11/2009 EP53A7LQI/EP53A7HQI PVIN NC(SW) V OUT PGND V SENSE Switch V FB Voltage Select Package Boundry VS0 VS1 VS2 www.enpirion.com Rev:B ...
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... The EP53A7xQI comes with two VID output voltage ranges. The EP53A7HQI provides V OUT 1.8V to 3.3V, the EP53A7LQI provides VID settings from 0.8V to 1.5V, and also has an external resistor divider option to program output setting over the 0. The EP53A7xQI provides the industry’s highest power density of any 1A DCDC converter solution ...
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... LLM before VIN ramp down. For applications with ENABLE control, tie LLM to ENABLE; enable device after VIN ramp up complete and disable device before VIN ramp 12 11/11/2009 EP53A7LQI/EP53A7HQI LLM Threshold Current vs. VOUT VIN=5V (top curve) VIN=4.2V VIN=3.7V VIN=3.3V (bottom curve) 1 ...
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... OUT the Power MOSFETS and the integrated inductor. The EP53A7HQI has a soft-start slew rate that is twice that of the EP53A7LQI. When the EP53A7LUI is configured in external resistor divider mode, the device has a fixed VOUT ramp time. Therefore, the ramp rate will vary with the output voltage setting. ...
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... NOTE: The VID pins must not be left floating. EP53A7L Low VID Range Programming The EP53A7LQI is designed to provide a high degree of flexibility in powering applications that require low V voltage scaling (DVS). The device employs a 3-pin VID architecture that allows the user to ...
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... There are eight (8) preset output voltage settings. The EP53A7HQI does not have an external divider option. EP53A7LQI, the VID pin settings can be changed while the device is enabled. Table 3 shows the VS0-VS2 pin logic states for the EP53A7HQI and the associated output voltage levels. ...
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... Recommended PCB Footprint © Enpirion 2009 all rights reserved, E&OE 01543 Figure 12: EP53A7xQI Package PCB Footprint 16 11/11/2009 EP53A7LQI/EP53A7HQI www.enpirion.com Rev:B ...
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... Enpirion products are not authorized for use in nuclear control systems, as critical components in life support systems or equipment used in hazardous environment without the express written authority from Enpirion. © Enpirion 2009 all rights reserved, E&OE 01543 Figure 13: EP53A7xQI Package Dimensions 17 11/11/2009 EP53A7LQI/EP53A7HQI www.enpirion.com Rev:B ...