參數(shù)資料
型號: TPS62361BYZHT
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩(wěn)壓器
英文描述: 4.3 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, BGA16
封裝: 2 X 2 MM, GREEN, DSBGA-16
文件頁數(shù): 24/52頁
文件大?。?/td> 1125K
代理商: TPS62361BYZHT
S
HS-Master Code
A
Sr
Register Address
A
Data
A/A
P
8
1
From TPS6236x to Master
From Master to TPS6236x
A
S
Sr
P
=
Acknowledge
START condition
REPEATED START condition
STOP condition
Slave Address
R/W
A
7
1
F/S Mode
H/S Mode
F/S Mode
Sr
Slave Address
Sr
Slave Address
H/S Mode continues
Data Transferred
(n x Bytes + Acknowledge)
SLVSAU9A
– MAY 2011 – REVISED AUGUST 2011
Figure 47. Data Transfer Format in H/S-Mode
Slave Address Byte
MSB
LSB
X
A1
A0
The slave address byte is the first byte received following the START condition from the master device.
Register Address Byte
MSB
LSB
0
D2
D1
D0
Following the successful acknowledgment of the slave address, the bus master will send a byte to the
TPS6236x, which will contain the address of the register to be accessed.
I
2C REGISTER RESET
The I2C registers can be reset by pulling VDD to GND. Refer to the Input Under Voltage Protection section for
details.
PULL DOWN RESISTORS
The EN, VSEL0 and VSEL1 inputs feature internal pull down resistors to discharge the potential if one of the pins
is not connected or is triggered by a high impedance source.
To achieve lowest possible quiescent current, the pull down resistors can be disabled individually at EN, VSEL0
and VSEL1 by I2C programming the registers PD_EN, PD_VSEL0 and PD_VSEL1.
By default, the pull down resistors are enabled.
INPUT CAPACITOR SELECTION
The input capacitor is required to buffer the pulsing current drawn by the device at VIN and reducing the input
voltage ripple. The pulsing current is originated by the operation principles of a step down converter.
Low ESR input capacitors are required for best input voltage filtering and minimal interference with other system
components. For best performance, ceramic capacitors with a low ESR at the switching frequency are
recommended. X7R or X5R type capacitors should be used.
A ceramic input capacitor in the nominal range of CIN = 4.7F to 22F should be a good choice for most
application scenarios. In general, there is no upper limit for increasing the input capacitor.
For typical operation, a 10
F X5R type capacitor is recommended. Table 7 shows a list of recommended
capacitors.
30
Copyright
2011, Texas Instruments Incorporated
Product Folder Link(s): TPS62360 TPS62361B TPS62362
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