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LM3648TTYFFR датащи(PDF) 5 Page - Texas Instruments

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номер детали LM3648TTYFFR
подробное описание детали  Synchronous Boost LED Flash Driver
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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LM3648TTYFFR датащи(HTML) 5 Page - Texas Instruments

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LM3648, LM3648TT
www.ti.com
SNVSA68B – OCTOBER 2014 – REVISED SEPTEMBER 2015
6.5 Electrical Characteristics
Typical limits tested at TA = 25°C. Minimum and maximum limits apply over the full operating ambient temperature range
(
−40°C ≤ TA ≤ +85°C). Unless otherwise specified, VIN = 3.6 V, HWEN = VIN.
(1) (2)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CURRENT SOURCE SPECIFICATIONS
VOUT = 4 V, flash code = 0x3F = 1.5 A
–7%
1.5
7%
A
flash
ILED
Current source accuracy
VOUT = 4 V, torch code = 0x3F = 178.6 mA
–10%
178.6
10%
mA
torch
Current source accuracy
VOUT = 4 V, torch code = 0x3F = 357.2 mA
ILED
–10%
357.2
10%
mA
(LM3648TT)
torch
ILED = 1.5 A
Flash
290
LED current source regulation
VHR
mV
voltage
ILED = 178.6 mA
Torch
158
LED current source regulation
Torch and
VHR
ILED = 357.2 mA
270
mV
voltage (LM3648TT)
Flash
ON threshold
4.86
5
5.1
VOVP
V
OFF threshold
4.75
4.88
4.99
STEP-UP DC-DC CONVERTER SPECIFICATIONS
RPMOS
PMOS switch on-resistance
86
m
RNMOS
NMOS switch on-resistance
65
Reg 0x07, bit[0] = 0
–12%
1.9
12%
ICL
Switch current limit
A
Reg 0x07, bit[0] = 1
–12%
2.8
12%
VUVLO
Undervoltage lockout threshold
Falling VIN
–2%
2.5
2%
V
VTRIP
NTC comparator trip threshold
Reg 0x09, bits[3:1] = '100'
–5%
0.6
5%
V
INTC
NTC current
–6%
50
6%
µA
Input voltage flash monitor trip
VIVFM
Reg 0x02, bits[5:3] = '000'
–3%
2.9
3%
V
threshold
IQ
Quiescent supply current
Device not switching pass mode
0.3
0.75
mA
Device disabled, HWEN = 0 V
ISD
Shutdown supply current
0.1
4
µA
2.5 V
≤ VIN ≤ 5.5 V
Device disabled, HWEN = 1.8 V
ISB
Standby supply current
2.5
10
µA
2.5 V
≤ VIN ≤ 5.5 V
HWEN, TORCH/TEMP, STROBE, TX VOLTAGE SPECIFICATIONS
VIL
Input logic low
0
0.4
V
2.5 V
≤ VIN ≤ 5.5 V
VIH
Input logic high
1.2
VIN
V
I2C-COMPATIBLE INTERFACE SPECIFICATIONS (SCL, SDA)
VIL
Input logic low
0
0.4
2.5 V
≤ VIN ≤ 4.2 V
V
VIH
Input logic high
1.2
VIN
VOL
Output logic low
ILOAD = 3 mA
400
mV
(1)
Minimum (MIN) and Maximum (MAX) limits are specified by design, test, or statistical analysis. Typical (TYP) numbers are not verified,
but do represent the most likely norm. Unless otherwise specified, conditions for typical specifications are: VIN = 3.6 V and TA = 25°C.
(2)
All voltages are with respect to the potential at the GND pin.
6.6 Timing Requirements
MIN
NOM
MAX
UNIT
t1
SCL clock period
2.4
µs
t2
Data in set-up time to SCL high
100
ns
t3
Data out stable After SCL low
0
ns
t4
SDA low set-up time to SCL low (start)
100
ns
t5
SDA high hold time after SCL high (stop)
100
ns
Copyright © 2014–2015, Texas Instruments Incorporated
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5
Product Folder Links: LM3648 LM3648TT


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