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参数资料
| 型号： | MAX3355EEBC+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/11页 |
| 文件大小： | 0K |
| 描述： | IC CHARGE PUMP USB OTG 12-UCSP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 充电泵，USB |
| 输入电压： | 2.6 V ~ 5.5 V |
| 输出数： | 1 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WFBGA，WLCSP |
| 供应商设备封装： | 12-UCSP（3x4） |
| 包装： | 带卷 (TR) |
±15kV ESD-Protected USB On-the-Go
Charge Pump and Comparators in UCSP
Detailed Description
USB OTG is an emerging USB standard that enables
devices to talk in a peer-to-peer manner on a USB bus.
OTG allows peripherals and mobile devices such as
PDAs, cellular phones, and digital cameras to be
attached directly to one another without requiring a
PC host.
The MAX3355E integrates a charge pump and compara-
tors to enable a system with an integrated USB OTG
dual-role transceiver to function as a USB OTG dual-role
device. The MAX3355E ’ s internal charge pump supplies
V BUS power and signaling as defined in On-the-Go
Supplement: USB 2.0, Revision 1.0 . The MAX3355E ’ s
internal level-detection comparators monitor important
V BUS voltages needed to support SRP and HNP.
Table 1. Status Bit Significance
Charge Pump
The MAX3355E provides power for the V BUS line using
an internal charge pump. The charge pump provides
an OTG-compliant output on V BUS while sourcing 8mA
load current. The charge pump can be powered from
voltages between +2.6V and +5.5V. A 0.1μF flying
capacitor, connected between C+ and C-, and a 1μF
(min) decoupling reservoir capacitor on V BUS are
required for proper operation.
The charge pump is active if OFFVBUS is connected to
V L and the MAX3355E is configured as device A (ID_IN
connected to GND). To minimize V BUS ripple, select a
reservoir capacitor value between 1μF and 6.8μF. The
charge-pump output is protected from short-circuit con-
ditions on V BUS by an internal current clamp that limits
the V BUS current to 200mA.
Current Generator
An internal current generator injects up to 600μA of cur-
rent onto the V BUS line. The current generator is stable
STATUS1
0
1
0
1
STATUS2
0
0
1
1
SIGNIFICANCE
V BUS < V THSESEND
V THSESEND < V BUS < V THSESVLD
V THSESVLD < V BUS < V THVBUSVLD
V BUS > V THVBUSVLD
over the supply voltage variation. The current generator
is connected to V BUS when OFFVBUS and SHDN are 1
and ID_IN is open. It remains connected for t VBUSCHRG
or until the V BUS line voltage exceeds the lower of V CC
and 4.82V.
Comparators
The MAX3355E contains internal comparators for moni-
Table 2. Status Bit Shutdown
Functionality ( SHDN = GND)
STATUS1 STATUS2 SIGNIFICANCE
toring the V BUS voltage. The status of V BUS is summa-
rized in two status outputs: STATUS1 and STATUS2.
The status outputs can be used to negotiate for the
USB OTG bus. The V BUS status is conveyed according
to Table 1. While in shutdown mode, the STATUS2 out-
0
0
1
0
V BUS < V TH, SHDN
V BUS > V TH, SHDN
put can be used to indicate V BUS voltage (Table 2).
Device ID
Configure the MAX3355E as device A by connecting
ID_IN to GND and as device B by leaving ID_IN open
Table 3. Device ID
(Table 3). ID_IN is level translated to V L and provided
ID_IN
0
Open
ID_OUT
0
V L
CONFIGURATION
Device A
Device B
as an output at ID_OUT. V L sets the logic output high
level. ID_IN is internally pulled up to V CC .
Table 4. Function Select
SHDN
0
1
1
1
OFFVBUS
X
0
1
1
ID_IN
X
X
0
1
V BUS
R INVBUS
R INVBUS
5V
R INVBUS (Note 5)
CHARGE PUMP
Inactive
Inactive
Active
Inactive
COMPARATORS
Inactive
Active
Active
Active
Note: The 600μA current source is supplied for t VBUSCHRG (see the Current Generator section).
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3355EEUD | 功能描述:电荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX3355EEUD+ | 功能描述:电荷泵 USB On-the-Go Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX3355EEUD+T | 功能描述:电荷泵 USB On-the-Go Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX3355EEUD-T | 功能描述:电荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX335C/D | 功能描述:模拟开关 IC Serial Controlled 8-Channel SPST Switch RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
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