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參數(shù)資料
| 型號(hào)： | MAX1558ETB |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 外設(shè)及接口 |
| 英文描述： | Dual, 3mm x 3mm, 1.2A/Programmable-Current USB Switches with Autoreset |
| 中文描述： | 2 A 2 CHANNEL, BUF OR INV BASED PRPHL DRVR, DSO10 |
| 封裝： | 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEED-3, TDFN-10 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大小： | 214K |
| 代理商： | MAX1558ETB |
Detailed Desc ription
The MAX1558/MAX1558H are dual current-limited
switches designed for USB applications. They have two
independent switches, each with its own enable control
input and autoreset function. Each switch has an error-
flag output to notify the USB controller when current-
limit, short-circuit, undervoltage-lockout, or thermal-
shutdown conditions occur (Figure 2). The MAX1558/
MAX1558H operate from a 2.7V to 5.5V supply. Each
output can supply up to 1.2A. Current limit for both
channels is set with one external resistor.
The MAX1558/MAX1558H have independent thermal
shutdown for each switch in the event of a prolonged
overload. An autoreset function monitors the output and
automatically turns the switch on when the overload is
removed. Separate current limiting and thermal-shut-
down circuits permit each switch to operate indepen-
dently, improving system robustness.
M
Dual, 3mm x 3mm, 1.2A/Programmable-Current
US B S witc hes with Autoreset
_______________________________________________________________________________________
7
PIN
NAME
FUNCTION
1
INA
Power Input for OUTA. Connect INA and INB together and bypass with a 0.1μF capacitor to ground.
Load conditions may require additional bulk capacitance to prevent the input from being pulled down.
2
ONA
*(ONA)
Control Input for Switch A. Can be driven higher than IN_ without damage. A logic low turns switch A on
for the MAX1558. A logic high turns switch A on for the MAX1558H.
3
ISET
Current-Limit Adjust for Both Channels. Connect a resistor between 26k
to 60k
from ISET to ground to
program the current limit. See
Setting the Current Limit
in the
Applications Information
section.
4
ONB
*(ONB)
Control Input for Switch B. Can be driven higher than IN_ without damage. A logic low turns switch B on
for the MAX1558. A logic high turns switch B on for the MAX1558H.
5
INB
Power Input for OUTB. Connect INB and INA together and bypass with a 0.1μF capacitor to ground.
Load conditions may require additional bulk capacitance to prevent the input from being pulled down.
6
OUTB
Power Output for Switch B. Connect a 1μF capacitor from OUTB to ground. The load condition may
require additional bulk capacitance.
7
FLTB
Fault Indicator Output for Switch B. This open-drain output goes low when switch B is in thermal
shutdown or UVLO or in a sustained (>20ms) current-limit or short-circuit condition.
Ground
8
GND
9
FLTA
Fault Indicator Output for Switch A. This open-drain output goes low when switch A is in thermal
shutdown or UVLO or in a sustained (>20ms) current-limit or short-circuit condition.
Power Output for Switch A. Connect a 1μF capacitor from OUTA to ground. The load condition may
require additional bulk capacitance.
10
OUTA
—
PAD
Exposed Pad, Internally Connected to GND. Connect exposed pad to a large copper trace for maximum
power dissipation.
Pin Desc ription
*
( ) are for the MAX1558H only.
MAX1558
INPUT
2.7V TO5.5V
INA
INB
ISET
FLTA
FLTB
ONA
ONB
ONA
ONB
OUTA
OUTB
GND
USB
PORT A
USB
PORT B
0.1
μ
F
100k
100k
1
μ
F*
1
μ
F*
*USB APPLICATIONS MAY REQUIRE ADDITIONAL
BULK CAPACITANCE
Figure 1. Typical Application Circuit
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| MAX1558ETB+ | 制造商:Maxim Integrated Products 功能描述:USB PWR SW DUAL 2.75V TO 5.5V 2A 10TDFN EP - Bulk |
| MAX1558ETB+T | 功能描述:電源開(kāi)關(guān) IC - USB Dual 1.2A/Prog-Crnt USB Switch w/Autorst RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1558ETB-T | 功能描述:電源開(kāi)關(guān) IC - USB Dual 1.2A/Prog-Crnt USB Switch w/Autorst RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1558HETB | 制造商:Maxim Integrated Products 功能描述:USB PWR SW DUAL 2.75V TO 5.5V 2A 10TDFN EP - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX1558HETB+ | 制造商:Maxim Integrated Products 功能描述:USB PWR SW DUAL 2.75V TO 5.5V 2A 10TDFN EP - Rail/Tube |
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