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LTC3886 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC3886
Description  60V Dual Output Step-Down Controller with Digital Power System Management
Download  116 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3886 Datasheet(HTML) 6 Page - Linear Technology

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LTC3886
6
3886f
For more information www.linear.com/LTC3886
elecTrical characTerisTics The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at TJ = 25°C (Note 2). VIN = 16V, EXTVCC = 0V, VRUN0 = 3.3V, VRUN1 = 3.3V
fSYNC = 350kHz (externally driven), and all programmable parameters at factory default unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tON(MIN)
Minimum On-Time
90
ns
OV/UV Output Voltage Supervisor
N
Resolution
9
Bits
VRANGE0
Range 0 Maximum Threshold
14
V
VRANGE1
Range 1 Maximum Threshold
7
V
VOUSTP0
Range 0 Step Size, FSR = 16.352V
(Note 10)
32
mV
VOUSTP1
Range 1 Step Size, FSR = 8.176V
16
mV
VTHACC0
Range 0 Threshold Accuracy
2V < VOUT < 14V
l
±2.5
%
VTHACC1
Range 1 Threshold Accuracy
1V < VOUT < 7V
l
±2.5
%
tPROPOV1
OV Comparator to FAULT Low Time
VOD = 10% of Threshold
35
µs
tPROPUV1
UV Comparator to FAULT Low Time
VOD = 10% of Threshold
100
µs
VIN Voltage Supervisor
N
Resolution
9
Bits
VIN(RANGE)
Full-Scale Voltage
(Note 11)
4.5
61.32
V
VIN(STP)
Step Size
120
mV
VIN(THACCH)
Threshold Accuracy 12V < VIN < 60V
l
±3
%
VIN(THACCL)
Threshold Accuracy 4.5V < VIN < 15V
±6
%
tPROP(VIN)
Comparator Response Time
(VIN_ON and VIN_OFF)
VOD = 10% of Threshold
100
µs
Output Voltage Readback
N
Resolution
LSB Step Size
16
250
Bits
µV
VF/S
Full-Scale Sense Voltage
(Note 10) VRUN = 0V (Note 8)
16.384
V
VOUT_TUE
Total Unadjusted Error
TJ = 25°C, VOUT > 1.0V
(Note 8)
l
0.2
0.5
%
%
VOS
Zero-Code Offset Voltage
l
±500
µV
tCONVERT
Conversion Time
(Note 6)
100
ms
VIN Voltage Readback
N
Resolution
(Note 5)
10
Bits
VF/S
Full-Scale Input Voltage
(Note 11)
66.56
V
VIN_TUE
Total Unadjusted Error
TJ = 25°C, VVIN > 4.5V
l
0.4
2
%
%
tCONVERT
Conversion Time
(Note 6)
100
ms
Output Current Readback
N
Resolution
LSB Step Size
(Note 5)
0V ≤ |VISENSE+ – VISENSE–| < 16mV
16mV ≤ |VISENSE+ – VISENSE–| < 32mV
32mV ≤ |VISENSE+ – VISENSE–| < 64mV
64mV ≤ |VISENSE+ – VISENSE–| < 100mV
10
15.26
30.52
61
122
Bits
µV
µV
µV
µV
IF/S
Full-Scale Output Current
(Note 7) RISENSE = 1mΩ
±100
A
IOUT_TUE
Total Unadjusted Error
(Note 8) 10mV ≤ VISENSE ≤ 120mV
l
±1.5
%
VOS
Zero-Code Offset Voltage
±32
µV


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