參數(shù)資料
型號(hào): DS232AS
廠商: DALLAS SEMICONDUCTOR
元件分類: Line Driver or Receiver
英文描述: LINE TRANSCEIVER, PDSO16
封裝: 0.300 INCH, SOIC-16
文件頁(yè)數(shù): 2/28頁(yè)
文件大小: 581K
代理商: DS232AS
MAX15023
Wide 4.5V to 28V Input, Dual-Output
Synchronous Buck Controller
10
Maxim Integrated
Pin Description (continued)
PIN
NAME
FUNCTION
13
PGND2
Low-Side Gate-Driver Supply Return (Regulator 2). Connect to the source of the low-side MOSFET of
Regulator 2.
14
DL2
Low-Side Gate-Driver Output for Regulator 2. DL2 swings from VCC to PGND2. DL2 is low before VCC
reaches the UVLO rising threshold voltage.
15
PGOOD2
Power-Good Output (Open Drain) for Channel 2. To obtain a logic signal, pull up PGOOD2 with an external
resistor connected to a positive voltage below 28V.
16
VCC
Internal 5.2V Linear Regulator Output and the Device’s Core Supply. When using the internal regulator,
bypass VCC to SGND with a 4.7F minimum low-ESR ceramic capacitor. If VCC is connected to IN for 5V
operation, then a 2.2F ceramic capacitor is adequate for decoupling (see the Typical Application Circuits).
17
FB2
Feedback Input for Regulator 2. Connect FB2 to a resistive divider between output 2 and SGND to adjust
the output voltage between 0.6V and (0.85 x input voltage (V)). See the Setting the Output Voltage section.
18
COMP2
Compensation Pin for Regulator 2. See the Compensation section.
19
RT
Oscillator-Timing Resistor Input. Connect a resistor from RT to SGND to set the oscillator frequency from
200kHz to 1MHz (see the Setting the Switching Frequency section).
20
SGND
Signal Ground. Connect SGND to the SGND plane. SGND also serves as sensing input of the synchronous
MOSFET’s VDS drop (source terminals) for both channels.
21
IN
Internal VCC Regulator Input. Bypass IN to SGND with a 1F minimum ceramic capacitor when the internal
linear regulator (VCC) is used. When operating in the 5V ±10% range, connect IN to VCC.
22
LIM2
Current-Limit Adjustment for Regulator 2. Connect a resistor (RLIM2) from LIM2 to SGND to adjust the
current-limit threshold (VITH2) from 30mV (RLIM2 = 6k
) to 300mV (RLIM2 = 60k). See the Setting the
Cycle-by-Cycle Low-Side Source Peak Current Limit section.
23
LIM1
Current-Limit Adjustment for Regulator 1. Connect a resistor (RLIM1) from LIM1 to SGND to adjust the
current-limit threshold (VITH1) from 30mV (RLIM1 = 6k
) to 300mV (RLIM1 = 60k). See the Setting the
Cycle-by-Cycle Low-Side Source Peak Current Limit section.
24
COMP1
Compensation Pin for Regulator 1. See the Compensation section.
—EP
Exposed Paddle. Connect EP to a large copper plane at SGND potential to improve thermal dissipation. Do
not use as the main IC’s SGND ground connection.
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DS232AS+T&R 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: