LP8758-B0_15 Datasheet, PDF (8/55 Pages) Texas Instruments – LP8758-B0 Four-Phase DC-DC Step-Down Converter

LP8758-B0
SNVSA06A – MARCH 2015 – REVISED MAY 2015
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Electrical Characteristics (continued)
Limits apply over the junction temperature range –40°C ≤ T_J ≤ 125°C, specified V_(VANA), V_IN , V_(NRST), V_OUT and I_OUT range,
unless otherwise noted. Typical values are at T_J = 25°C, ƒ_SW = 3 MHz, V_(VANA) = V_IN = 3.7 V and V_OUT = 1 V unless otherwise
noted.⁽¹⁾⁽²⁾
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
Output pulldown resistance Regulator disabled
150
250
350 Ω
Powergood threshold for
Rising ramp voltage, enable or
interrupt
voltage change
BUCKx_INT(BUCKx_SC_INT
), difference from final
voltage
Falling ramp, voltage change
–23
–17
10
17
–10
mV
23
Powergood threshold for
status signal
During operation, status signal is
BUCKx_STAT(BUCKx_PG_S forced to '0' during voltage change
TAT)
–23
–17
–10 mV
PROTECTION FEATURES
Temperature rising,
CONFIG(TDIE_WARN_LEVEL) = 0
125
Thermal warning
Temperature rising,
CONFIG(TDIE_WARN_LEVEL) = 1
105
°C
Hysteresis
15
Thermal shutdown
Temperature rising
Hysteresis
150
°C
15
VANA_UVLO
Voltage falling
VANA undervoltage lockout
Hysteresis
2.3
2.4
50
2.5 V
mV
LOAD CURRENT MEASUREMENT
Current measurement range Maximum code
20.46
A
Resolution
LSB
20
mA
Measurement accuracy
CURRENT CONSUMPTION
I_OUT ≥ 2 A
<10%
Shutdown current
consumption
V_(NRST) = 0 V
1
µA
Standby current
consumption, regulator
disabled
V_(NRST) = 1.8 V
6
µA
Active current consumption V_(NRST) = 1.8 V, I_OUT = 0 mA, not
during PFM operation
switching
71
µA
Active current consumption
during PWM operation
V_(NRST) = 1.8 V, I_OUT = 0 mA
18
mA
8
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