Datasheet MP28300 (Monolithic Power Systems) - 4
| Manufacturer | Monolithic Power Systems |
| Description | 300mA, 5.5V, 500nA, Ultra-Low Iq, Synchronous, Step-Down Converter plus 100mA LDO in 2x2 QFN |
| Pages / Page | 20 / 4 — MP28300 – ULTRA-LOW IQ STEP-DOWN CONVERTER |
| File Format / Size | PDF / 657 Kb |
| Document Language | English |
MP28300 – ULTRA-LOW IQ STEP-DOWN CONVERTER
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MP28300 – ULTRA-LOW IQ STEP-DOWN CONVERTER ELECTRICAL CHARACTERISTICS VIN1 = 3.6V, VIN2 = 3.6V, TJ = -40°C to +125°C, typical value is tested at TJ = 25°C. The limit over temperature is guaranteed by characterization, unless otherwise noted. Parameters Symbol Condition Min Typ Max Units Buck Section
Input voltage range (5) VIN1 2.0 5.5 V Under-voltage lockout threshold V rising for buck IN1_UVLO_R 1.65 1.8 1.95 V Under-voltage lockout threshold V hysteresis for buck IN1_UVLO_H 150 mV Supply current (shutdown) ISD_25 CTRL1/2/3 = 0V, or EN = 0 70 nA No load, CTRL4/5 = 0V, Supply current (quiescent) IQ_BUCK CTRL1/2/3 = H/L/H, 500 nA OUT1 = 1.8V, not switching High-side switch on resistance RDSON1_H 0.25 Ω Low-side switch on resistance RDSON1_L 0.25 Ω CTRL1/2/3 = 0V, V Switch leakage current I IN1 = 5.5V, LK_SW1 -100 0 100 nA VSW = 0V and 5.5V, TJ = 25°C High-side current limit ILIM1_H 480 600 720 mA Low-side switch valley current I (sourcing) LIMV1_L 300 400 mA Low-side switch zero crossing I current ZCD 0 20 mA On time TON VIN1 = 3.6V, VOUT = 1.8V 280 330 380 ns Input voltage range for LDO (5) VIN2 When VIN1 > VIN1_UVLO 2.0 5.5 V Minimum on time TMIN_ON 60 ns Minimum off time TMIN_OFF 100 ns Maximum duty cycle (5) DMAX 100 % CTRL1/2/3 = H/L/H, 1.782 1.800 1.818 TJ = 25°C, IOUT = 0.1A Output voltage accuracy VOUT V CTRL1/2/3 = H/L/H, 1.773 1.827 TJ = -40°C to 85°C, IOUT = 0.1A From 2.5V to 5.5V, from 0A to Line/load regulation of buck (6) -1 1 % 300mA MP28300 Rev.1.1 www.MonolithicPower.com 4 6/12/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved.
Input voltage range (5) VIN1 2.0 5.5 V Under-voltage lockout threshold V rising for buck IN1_UVLO_R 1.65 1.8 1.95 V Under-voltage lockout threshold V hysteresis for buck IN1_UVLO_H 150 mV Supply current (shutdown) ISD_25 CTRL1/2/3 = 0V, or EN = 0 70 nA No load, CTRL4/5 = 0V, Supply current (quiescent) IQ_BUCK CTRL1/2/3 = H/L/H, 500 nA OUT1 = 1.8V, not switching High-side switch on resistance RDSON1_H 0.25 Ω Low-side switch on resistance RDSON1_L 0.25 Ω CTRL1/2/3 = 0V, V Switch leakage current I IN1 = 5.5V, LK_SW1 -100 0 100 nA VSW = 0V and 5.5V, TJ = 25°C High-side current limit ILIM1_H 480 600 720 mA Low-side switch valley current I (sourcing) LIMV1_L 300 400 mA Low-side switch zero crossing I current ZCD 0 20 mA On time TON VIN1 = 3.6V, VOUT = 1.8V 280 330 380 ns Input voltage range for LDO (5) VIN2 When VIN1 > VIN1_UVLO 2.0 5.5 V Minimum on time TMIN_ON 60 ns Minimum off time TMIN_OFF 100 ns Maximum duty cycle (5) DMAX 100 % CTRL1/2/3 = H/L/H, 1.782 1.800 1.818 TJ = 25°C, IOUT = 0.1A Output voltage accuracy VOUT V CTRL1/2/3 = H/L/H, 1.773 1.827 TJ = -40°C to 85°C, IOUT = 0.1A From 2.5V to 5.5V, from 0A to Line/load regulation of buck (6) -1 1 % 300mA MP28300 Rev.1.1 www.MonolithicPower.com 4 6/12/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved.
