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LM5122ZPWPR Scheda tecnica(PDF) 9 Page - Texas Instruments

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Il numero della parte LM5122ZPWPR
Spiegazioni elettronici  Wide-Input Synchronous Boost Controller With Multiple Phase Capability
PDF  51 Pages
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LM5122ZPWPR Scheda tecnica(HTML) 9 Page - Texas Instruments

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LM5122, LM5122-Q1
www.ti.com
SNVS954G – FEBRUARY 2013 – REVISED MAY 2016
Product Folder Links: LM5122 LM5122-Q1
Submit Documentation Feedback
Copyright © 2013–2016, Texas Instruments Incorporated
Electrical Characteristics (continued)
Unless otherwise specified, these specifications apply for –40°C
≤ TJ ≤ +125°C, VVIN = 12 V, VVCC = 8.3 V, RT = 20 kΩ, no
load on LO and HO. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference
purposes only.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
HO GATE DRIVER
VOHH
HO high-state voltage drop
IHO = –100 mA, VOHH = VBST –VHO
0.15
0.24
V
VOLH
HO low-state voltage drop
IHO = 100 mA, VOLH = VHO –VSW
0.1
0.18
V
HO rise time (10% to 90%)
CLOAD = 4700 pF, VBST = 12 V
25
ns
HO fall time (90% to 10%)
CLOAD = 4700 pF, VBST = 12 V
20
ns
IOHH
Peak HO source current
VHO = 0 V, VSW = 0 V, VBST = 4.5 V
0.8
A
VHO = 0 V, VSW = 0 V, VBST = 7.6 V
1.9
A
IOLH
Peak HO sink current
VHO = VBST = 4.5 V
1.9
A
VHO = VBST= 7.6 V
3.2
A
IBST
BST charge pump sourcing
current
VVIN = VSW = 9.0 V , VBST - VSW = 5.0 V
100
200
µA
BST charge pump regulation
BST to SW, IBST= –70 μA,
VVIN = VSW = 9.0 V
5.3
6.2
6.75
V
BST to SW, IBST = –70 μA,
VVIN = VSW = 12 V
7
8.5
9
V
BST to SW undervoltage
2.0
3.0
3.5
V
BST DC bias current
VBST - VSW = 12 V, VSW = 0 V
30
45
µA
LO GATE DRIVER
VOHL
LO high-state voltage drop
ILO = –100 mA, VOHL = VVCC –VLO
0.15
0.25
V
VOLL
LO low-state voltage drop
ILO = 100 mA, VOLL = VLO
0.1
0.17
V
LO rise time (10% to 90%)
CLOAD = 4700 pF
25
ns
LO fall time (90% to 10%)
CLOAD = 4700 pF
20
ns
IOHL
Peak LO source current
VLO = 0 V, VVCC = 4.5 V
0.8
A
VLO = 0 V
2.0
A
IOLL
Peak LO sink current
VLO = VVCC = 4.5 V
1.8
A
VLO = VVCC
3.2
A
SWITCHING CHARACTERISTICS
tDLH
LO fall to HO rise delay
No load, 50% to 50%
50
80
115
ns
tDHL
HO fall to LO rise delay
No load, 50% to 50%
60
80
105
ns
THERMAL
TSD
Thermal shutdown
Temperature rising
165
ºC
Thermal shutdown hysteresis
25
ºC



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