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參數資料
| 型號： | TPS60251RTWT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 750 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封裝： | 4 X 4 MM, GREEN, PLASTIC, QFN-24 |
| 文件頁數： | 21/26頁 |
| 文件大小： | 783K |
| 代理商： | TPS60251RTWT |
www.ti.com
PIN ASSIGNMENTS
6
12
18
24
1
2
3
4
5
7
8
9
10
11
13
14
15
16
17
19
20
21
22
23
SDAT
DS1 DS2 DM 5
ENA
SCLK
VIO
NC
GND
NC
DM1
DM 2
DM3
DM4
IS
GND
C1+
C2+
C2-
C1-
VOUT
VIN
QFN24-PINRTW
4mmx4mm
(TOP VIEW)
SLVS767C – APRIL 2007 – REVISED NOVEMBER 2007
ELECTRICAL CHARACTERISTICS (continued)
VI = 3.5 V, TA = –40°C to 85°C, RIS = 562 k, typical values are at TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
tsu(STO)
STOP condition setup time
600
ns
t(BUF)
Bus free time
1300
ns
I2C COMPATIBLE INTERFACE VOLTAGE SPECIFICATION (SCLK, SDAT, VIO)
VIO
Serial bus voltage level
1.4
4.5
V
VIL
Low-leveI input voltage
3.0V
≤ VI ≤ 6.0V, 1.4 V < VIO < 1.8 V
0
0.37
×V
IO
V
VIH
High-level input voltage
3.0V
≤ VI ≤ 6.0V
0.87
×V
IO
V
VOL
Low-level output voltage
ILOAD = 2 mA
0.4
V
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
SCLK
1
I
I2C Interface
SDAT
2
I/O
I2C Interface
Hardware enable/disable pin. Connect this pin high to enable the device. Connect this pin low to disable
ENA
3
I
the device. Do not leave this pin unconnected.
DS1
4
I
Current sink input. Connect the cathode of one of the sub display white LEDs to this pin.
DS2
5
I
DM5
6
I
Current sink input. Connect the cathode of the aux display or the 5th main display white LED to this pin.
I/O Voltage input (1.8V). Connect an input voltage supply of 1.8V to VIN to set the logic levels for the I2C
VIO
7
I
interface.
NC
8, 11, 12
–
No connection
GND
9, 10, 18
–
Ground
DM1
13
I
DM2
14
I
Current sink input. Connect the cathode of one of the main display white LED to this pin.
DM3
15
I
DM4
16
I
Maximum LED current setting input. Connect a resistor (RIS) between this pin and GND to set the full-scale
IS
17
I
white LED current for sub (DS1, DS2), main (DM1, DM2, DM3, DM4), and DM5 LEDs. See the Setting the
LED Current section for details on selecting the correct value for RIS.
4
Copyright 2007, Texas Instruments Incorporated
Product Folder Link(s): TPS60251
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| TPS60251RTWT | 制造商:Texas Instruments 功能描述:DC/DC Charge Pump Converter IC |
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