JAJSG84B January 2016 – June 2018 LP8758-E0
PRODUCTION DATA.
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
EXTERNAL COMPONENTS | ||||||
CIN | Input filtering capacitance | Connected from VIN_Bx to PGND_Bx | 1.9 | 10 | µF | |
COUT | Output filtering capacitance, local | Capacitance per output voltage rail | 10 | 22 | µF | |
COUT-TOTAL | Output capacitance, total (local and remote) | Total output capacitance | 50 | µF | ||
ESRC | Input and output capacitor ESR | [1-10] MHz | 2 | 10 | mΩ | |
L | Inductor | Inductance of the inductor | 0.47 | µH | ||
–30% | 30% | |||||
DCRL | Inductor DCR | TDK, VLS252010HBX-R47M | 29 | mΩ | ||
BUCK REGULATORS | ||||||
VIN | Input voltage range | Voltage between VIN_Bx and ground terminals. VANA must be connected to the same supply as VIN_Bx. | 2.5 | 3.7 | 5.5 | V |
VOUT | Output voltage | Programmable voltage range | 0.5 | 1 | 3.36 | V |
Step size, 0.5 V ≤ VOUT < 0.73 V | 10 | mV | ||||
Step size, 0.73 V ≤ VOUT < 1.4 V | 5 | |||||
Step size, 1.4 V ≤ VOUT ≤ 3.36 V | 20 | |||||
IOUT | Output current | Output current, VIN ≤ 3 V | 3(3) | A | ||
Output current, VIN > 3 V, VOUT ≤ 2 V | 4(3) | |||||
Output current, VIN > 3 V, VOUT > 2 V | 3.5(3) | |||||
Dropout voltage | VIN – VOUT | 0.7 | V | |||
DC output voltage accuracy, includes voltage reference, DC load and line regulations, process and temperature | Force PWM mode | min (–2%,
–20 mV) |
max (2%, 20 mV) | |||
PFM mode, the average output voltage level is increased by max. 20 mV | min (–2%,
–20 mV) |
max ( 2%, 20 mV) + 20 mV | ||||
Ripple | PWM mode, L = 0.47 µH | 10 | mVp-p | |||
PFM mode, L = 0.47 µH | 20 | |||||
DCLNR | DC line regulation | IOUT = 1 A | ±0.05 | %/V | ||
DCLDR | DC load regulation in PWM mode | IOUT from 0 to IOUT(max) | 0.3% | |||
TLDSR | Transient load step response | IOUT = 0 A to 2 A, TR = TF = 400 ns, PWM mode, COUT = 44 µF, L = 0.47 µH | ±55 | mV | ||
TLNSR | Transient line response | VIN stepping 3.3 V ↔ 3.8 V, TR = TF = 10 µs, IOUT = IOUT(max) | ±15 | mV | ||
ILIM FWD | Forward current limit (peak for every switching cycle), per phase | Programmable range | 2.5 | 5 | A | |
Step size | 0.5 | |||||
Accuracy, 3 V ≤ VIN ≤ 5.5 V, ILIM FWD = 5 A | -5% | 7.5% | 20% | |||
Accuracy, 2.5 V ≤ VIN ≤ 3 V, ILIM FWD = 5 A | -20% | 7.5% | 20% | |||
ILIM NEG | Negative current limit | 1.6 | 2 | 2.4 | A | |
RDS(ON) HS FET | On-resistance, high-side FET | Between VIN_Bx and SW_Bx pins (I = 1 A) | 40 | 90 | mΩ | |
RDS(ON) LS FET | On-resistance, low-side FET | Between SW_Bx and PGND_Bx pins
(I = 1 A) |
33 | 50 | mΩ | |
Overshoot during start-up | Slew-rate = 10 mV/µs | < 50 | mV | |||
IPFM-PWM | PFM-to-PWM switch - current threshold(4) | 600 | mA | |||
IPWM-PFM | PWM-to-PFM switch - current threshold(4) | 240 | mA | |||
Output pulldown resistance | Regulator disabled | 150 | 250 | 350 | Ω | |
Powergood threshold for interrupt BUCKx_INT(BUCKx_SC_INT), difference from final voltage | Rising ramp voltage, enable or voltage change | –23 | –17 | –10 | mV | |
Falling ramp, voltage change | 10 | 17 | 23 | |||
Powergood threshold for status signal BUCKx_STAT(BUCKx_PG_STAT) | During operation, status signal is forced to 0 during voltage change | –23 | –17 | –10 | mV | |
PROTECTION FEATURES | ||||||
Thermal warning | Temperature rising, CONFIG(TDIE_WARN_LEVEL) = 0 | 125 | °C | |||
Temperature rising, CONFIG(TDIE_WARN_LEVEL) = 1 | 105 | |||||
Hysteresis | 15 | |||||
Thermal shutdown | Temperature rising | 150 | °C | |||
Hysteresis | 15 | |||||
VANAUVLO | VANA undervoltage lockout | Voltage falling | 2.3 | 2.4 | 2.5 | V |
Hysteresis | 50 | mV | ||||
LOAD CURRENT MEASUREMENT | ||||||
Current measurement range | Maximum code | 20.46 | A | |||
Resolution | LSB | 20 | mA | |||
Measurement accuracy | IOUT ≥ 1 A | < 10% | ||||
CURRENT CONSUMPTION | ||||||
Shutdown current consumption | V(NRST) = 0 V | 1 | µA | |||
Standby current consumption, converter cores disabled | V(NRST) = 1.8 V | 6 | µA | |||
Active current consumption during PFM operation, one converter core enabled | V(NRST) = 1.8 V, IOUT = 0 mA, not switching | 55 | µA | |||
Active current consumption during PWM operation, per converter core | V(NRST) = 1.8 V, IOUT = 0 mA, L = 0.47 µH | 14.5 | mA | |||
DIGITAL INPUT SIGNALS NRST, ENx, SCL, SDA | ||||||
VIL | Input low level | 0.4 | V | |||
VIH | Input high level | 1.2 | V | |||
VHYS | Hysteresis of Schmitt trigger inputs (SCL, SDA) | 10 | 80 | 160 | mV | |
ENx pulldown resistance | ENx_PD = 1 | 350 | 500 | 720 | kΩ | |
NRST pulldown resistance | Always present | 800 | 1200 | 1700 | kΩ | |
DIGITAL OUTPUT SIGNALS nINT, SDA | ||||||
VOL | Output low level | ISOURCE = 2 mA, | 0.4 | V | ||
RP | External pullup resistor for nINT | To VIO Supply | 10 | kΩ | ||
ALL DIGITAL INPUTS | ||||||
ILEAK | Input current | All logic inputs over pin voltage range | −1 | 1 | µA |