LM5166
www.ti.com.cn
ZHCSFV4B –DECEMBER 2016–REVISED JUNE 2017
6.5 Electrical Characteristics
Typical values correspond to TJ = 25°C. Minimum and maximum limits are based on TJ = –40°C to +125°C. VIN = 12 V
(unless otherwise noted).(1)(2)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIN DC supply current,
shutdown
IQ-SD
VEN = 0 V, TJ = 25°C
4
6
µA
IQ-SLEEP
VIN DC supply current, no load VFB = 1.5 V, TJ = 25°C
9.7
10
15
µA
IQ-SLEEP-
VINMAX
VIN DC supply current, no load VFB = 1.5 V, VVIN = 65 V, TJ = 25°C
15
µA
IQ-ACTIVE-PFM
VIN DC supply current, active
VIN DC supply current, active
PFM mode, RRT = 0 Ω, RSS = 100 kΩ
COT mode, RRT = RSS = 100 kΩ
205
320
µA
µA
IQ-ACTIVE-COT
POWER SWITCHES
RDSON1 High-side MOSFET RDS(on)
RDSON2 Low-side MOSFET RDS(on)
ISW = –100 mA
ISW = 100 mA
0.93
0.48
Ω
Ω
CURRENT LIMITING
IHS_LIM1
1125
675
1250
750
500
415
315
1375
825
High-side peak current limit
threshold
IHS_LIM2
IHS_LIM3
ILS_LIM1
ILS_LIM2
See 表 3
See 表 3
mA
mA
440
560
Low-side valley current limit
threshold
REGULATION COMPARATOR
VVOUT5
VOUT 5-V DC setpoint
LM5166X
4.9
5.0
3.3
7
5.1
V
V
VVOUT3.3
VOUT 3.3-V DC setpoint
LM5166Y
3.23
3.37
VVOUT = 5 V, LM5166X
VVOUT = 3.3 V, LM5166Y
IVOUT
VOUT pin input current
µA
3.8
Lower FB regulation threshold
(PFM and COT)
VFB1
VFB2
1.208
1.218
1.223
1.233
1.238
V
V
Adjustable VOUT version
VFB = 1 V
Upper FB regulation threshold
(PFM)
1.248
25
IFB
FB pin input bias current
nA
FBHYS-PFM
FB comparator PFM hysteresis PFM mode
10
4
mV
FB comparator dropout
COT mode
FBHYS-COT
mV
%/V
%/V
hysteresis
FBLINE-REG
VOUTLINE-REG
FB threshold variation over line VVIN = 3 V to 65 V
0.005
0.005
VOUT threshold variation over
line
LM5166X, VVIN = 6 V to 65 V
LM5166Y, VVIN = 4.5 V to 65 V
POWER GOOD
UVTRISING
VFB rising relative to VFB1 threshold
VFB falling relative to VFB1 threshold
VFB = 1 V
94%
87%
80
PGOOD comparator
UVTFALLING
RPGOOD
PGOOD on-resistance
200
1.65
100
Ω
V
VVIN falling
IPGOOD = 0.1 mA, VPGOOD < 0.5 V
Minimum required VIN for valid
PGOOD
VINMIN-PGOOD
1.2
10
IPGOOD
PGOOD off-state leakage
VFB = 1.2 V, VPGOOD = 5.5 V
nA
ENABLE / UVLO
VIN-ON
Turnon threshold
Turnoff threshold
EN turnon threshold
EN turnoff threshold
VVIN rising
VVIN falling
VEN rising
VEN falling
2.60
2.35
2.75
2.45
2.95
2.60
V
V
V
V
VIN-OFF
VEN-ON
1.163
1.109
1.22
1.276
1.178
VEN-OFF
1.144
(1) All hot and cold limits are specified by correlating the electrical characteristics to process and temperature variations and applying
statistical process control.
(2) The junction temperature (TJ in °C) is calculated from the ambient temperature (TA in °C) and power dissipation (PD in Watts) as follows:
TJ = TA + (PD • θJA) where θJA (in °C/W) is the package thermal impedance provided in Thermal Information.
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