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L5965 数据表(PDF) 11 Page - STMicroelectronics

部件名 L5965
功能描述  Power management for automotive vision and radar systems
PDF  73 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L5965 数据表(HTML) 11 Page - STMicroelectronics

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Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
tSOFTSTART_BUCK2
Soft start time when start up, Vref
from 0 V to 1 V
SPI = 10
1.8
2.2
2.6
ms
Fspread_BUCK2
Spread spectrum range
Fsw = 400 kHz
-20
-
20
%
Fsw = 2.4 MHz
-4
-
4
%
PhiBUCK2
Phase shift to BUCK1
-
-
180
-
deg
tSR_PH2(4)
Output stage slew rate when FSW
= 400 kHz
VIN = 14 V, Iload = 1.8 A, VOUT = 3.3 V
SPI = 00
-
10
-
ns
SPI = 01
-
20
-
ns
Output stage slew rate when FSW
= 2.4 MHz
VIN = 5 V, Iload = 1 A, VOUT = 3.3 V
-
10
-
ns
BUCK3
VIN_BUCK3
Input voltage range
-
3.0
-
5.5
V
VOUT_BUCK3
Output voltage
(no load, static)
OTP = 000
VIN_BUCK3 > 4.5 V
-2.5%
3.3
+2.5%
V
OTP = 001
2.5
V
OTP = 010
2.3
V
OTP = 011
2.0
V
OTP = 100
1.8
V
OTP = 101
1.35
V
OTP = 110
1.2
V
OTP = 111
1.0
V
ton_min
-
-
-
70
-
ns
∆VBUCK3/VBUCK3(4)
Undershoot
Load = 0.3 A to 0.8 A ∆t = 10 µs, VIN= 3.3 V
-5
-
5
%
∆VLINEAR-LOADR_VBUCK3 Static line + load regulation
Load = 0.3 A to 0.8 A
-
0.1
-
%
ILIMIT
Peak switching current limitation
-
1.4
1.8
2.3
A
RonHS
High side switch on resistance
-
-
150
250
mΩ
RonLS
Low side switch on resistance
-
-
110
200
mΩ
Fsw_BUCK3
Free-run switching frequency
-
2.04
2.4
2.76
MHz
ƞ(4)
Efficiency
FSW = 2.4 MHz, VIN = 3.3 V, VOUT = 1. 2 V,
Iload = 0.7 A
-
80
-
%
tSOFTSTART_BUCK3
Soft start time when start up, Vref
from 0 V to 1 V
SPI = 00
0.35
0.45
0.55
ms
SPI = 01
0.8
1.1
1.4
ms
SPI = 10
1.8
2.2
2.6
ms
Fspread_BUCK3
Spread spectrum range
Fsw=2.4 MHz
-4
-
4
%
PhiBUCK3
Phase shift to BUCK1
-
-
90
-
deg
tSR_PH3(4)
Ouptut stage slew rate, FSW=2.4
MHz
VIN = 3.3 V, Iload = 0.8 A, VOUT = 1.2 V
-
10
-
ns
BUCK4
VIN_BUCK4
Input voltage range
-
3.0
-
5.5
V
VOUT_BUCK4
Output voltage
(no load, static)
OTP = 000
VIN_BUCK4 > 4.5 V
-2.5%
3.3
+2.5%
V
OTP = 001
1.8
V
L5965
Electrical characteristics
DS12567 - Rev 3
page 11/73



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