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参数资料
| 型号： | MAX1607ETB+TG38 |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/10页 |
| 文件大小： | 0K |
| 描述： | IC USB SWITCH CURR LIMIT 10TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | USB 开关 |
| 输出数： | 1 |
| Rds（开）： | 90 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 700mA |
| 输入电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
USB Current-Limited Switch
in Pin-Compatible Package
Pin Description
SO
1
2, 3
4
5
PIN
TDFN
6
1, 3, 9
5
7
NAME
GND
IN
EN
OC
FUNCTION
Ground
Input. P-channel MOSFET source. Connect all IN pins together and bypass with a 1μF capacitor to
ground.
Active-Low Switch Enable Input. A logic-low turns on the switch.
Overcurrent Indicator Output. This open-drain output goes low when the device is in thermal
shutdown or undervoltage lockout, or during a sustained (> 10ms) current-limit condition.
6, 7, 8
—
2, 4,
8, 10
—
OUT
EP
Switch Output. P-channel MOSFET drain. Connect all OUT pins together and bypass with a 0.1μF
capacitor to ground.
Exposed Paddle (TDFN Package Only). Internally connected to GND. Connect to a large ground
plane to maximize thermal performance. Not intended as an electrical connection point.
These switches are not bidirectional; therefore, the
input voltage must be higher than the output voltage.
IN
OC
P
P
MAX1607
OUT
Continuous Short-Circuit Protection
The MAX1607 is a short-circuit-protected switch. In the
event of an output short-circuit condition, the current
through the switch is foldback-current-limited to 500mA
continuous.
N
REPLICA
AMPLIFIER
ON
P
Thermal Shutdown
The MAX1607 has a thermal shutdown feature. The
switch turns off and the OC output goes low immediate-
ly (no overcurrent blanking) when the junction tempera-
ture exceeds +165°C. When the MAX1607 cools 20°C,
10ms
TIMER
HOT
ON
CURRENT-LIMIT
AMPLIFIER
1.24V
the switch turns back on. If the fault short-circuit condi-
tion is not removed, the switch will cycle on and off,
resulting in a pulsed output.
OC Indicator
The MAX1607 provides an overcurrent output ( OC ). A
100k Ω pull-up resistor from OC to IN provides a logic
EN
CONTROL
CIRCUITRY
GND
control signal. This open-drain output goes low when
any of the following conditions occur:
? The input voltage is below the 2.4V undervoltage-
lockout (UVLO) threshold.
Figure 1. Functional Diagram
Detailed Description
The MAX1607 P-channel MOSFET power switch limits
output current to 0.7A min and 1.0A max. When the out-
put current is increased beyond the current limit (I LIMIT ),
the current also increases through the replica switch
(I OUT / 6500). The current-limit error amplifier compares
the voltage to the internal 1.24V reference and regu-
lates the current back to the I LIMIT (Figure 1).
? The die temperature exceeds the thermal shutdown
temperature limit of +165°C.
? The device is in current limit for greater than 10ms.
OC Blanking
The MAX1607 features 10ms overcurrent blanking.
Blanking allows brief current-limit faults, including
momentary short-circuit faults that occur when hot-
swapping a capacitive load, and also ensures that no
OC is issued during power-up. When a load transient
causes the device to enter current limit, an internal
6
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