elecTrical characTerisTics The l denotes the specifications which apply over the full op" />
參數(shù)資料
型號(hào): LT8500EUHH#TRPBF
廠商: Linear Technology
文件頁數(shù): 18/24頁
文件大小: 0K
描述: IC PWM GENERATOR 56-QFN
標(biāo)準(zhǔn)包裝: 2,500
類型: PWM 發(fā)生器
PLL:
主要目的: LED 照明
輸入: CMOS,TTL
輸出: CMOS,TTL
電路數(shù): 1
比率 - 輸入:輸出: 0.075
差分 - 輸入:輸出: 無/無
頻率 - 最大: 50MHz
電源電壓: 3 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 56-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 56-QFN-EP(5x9)
包裝: 帶卷 (TR)
LT8500
3
8500f
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 3.3V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Supply
VCC
VCC Operating Voltage
l
3.0
5.5
V
Digital Inputs: SCKI, SDI, LDIBLANK, OPENLED, PWMCK
VIH
VIL
Input Logic Levels
High Level Voltage
Low Level Voltage
VCC = 5V
VCC = 3.3V
VCC = 5V
VCC = 3.3V
l
4.0
2.7
1.0
0.6
V
IIN
Input Current
Pin Voltage = VCC or GND Excluding OPENLED
–1
1
A
RPU
OPENLED Pull-Up Resistor
VCC = 5.5V
70
100
130
CIN
Input Capacitance (Note 4)
Pin to GND
3
pF
Digital Outputs: SCKO, SDO, PWM[48:1]
VOH
VOL
SDO, SCKO Output Voltages
High Level Voltage
Low Level Voltage
IOUT = –6mA, VCC = 5V
IOUT = –3mA, VCC = 3.3V
IOUT = 6mA, VCC = 5V
IOUT = 3mA, VCC = 3.3V
l
4.0
2.7
1.0
0.6
V
VOH
VOL
PWM [48:1] Output Voltages
High Level Voltage
Low Level Voltage
IOUT = –3mA, VCC = 5V
IOUT = –1.5mA, VCC = 3.3V
IOUT = 3mA, VCC = 5V
IOUT = 1.5mA, VCC = 3.3V
l
4.0
2.7
1.0
0.6
V
TiMing characTerisTics The
l
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VCC = 3.3V, and all inputs are rail-to-rail unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
fSCKI
Data Shift Clock Frequency
SCKI
↑ – SCKI ↑ (Figure 4)
l
50
MHz
fPWMCK
PWMCK Clock Frequency
PWMCK
↑ – PWMCK ↑ (Figure 5)
l
25
MHz
tWH-SCKI
Minimum SCKI High Time (Note 3)
SCKI = High
2
ns
tWL-SCKI
Minimum SCKI Low Time (Note 3)
SCKI = Low
2
ns
tWH-LDI
LDIBLANK Pulse Duration
(LDI Function)
LDIBLANK = High (Figure 4)
l
8
5,000
ns
tWH-BLANK
LDIBLANK Pulse Duration
(BLANK Function)
LDIBLANK = High (Figure 4)
l
50,000
ns
tSU-SDI
SDI-SCKI Setup Time (Note 3)
SDI
↑↓ – SCKI ↑ (Figure 4)
l
3
ns
tHD-SDI
SCKI-SDI Hold Time (Note 3)
SCKI
↑ – SDI ↑↓(Figure 4)
l
1.75
ns
tSU-LDI
SCKI-LDIBLANK Setup Time (Note 3)
SCKI
↑ – LDIBLANK ↑ (Figure 4)
SCKI 50% Duty Cycle
l
10
ns
tHD-LDI
LDIBLANK-SCKI Hold Time (Note 3)
LDIBLANK
↓ – SCKI ↑ (Figure 4)
l
5
ns
tPD-SDO
SCKI-SDO Propagation Delay (Note 3)
SCKI
↑ – SDO ↑↓ (Figure 4)
l
15
25
ns
tPD-SCK
SCKI-SCKO Propagation Delay (Note 3)
SCKI
↑ – SCKO ↑ (Figure 4)
l
10
20
ns
tHD-SDO
SCKO-SDO Hold Time (Note 3)
SCKO
↑ – SDO ↑↓ (Figure 4)
l
2.75
ns
tDC-SCK
SCKI-SCKO Duty Cycle Change (Note 4)
Difference Between SCKI = High Time
and SCKO = High Time, CLOAD = 25pF
–0.2
ns
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