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参数资料
| 型号： | PC13892VKR2 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA139 |
| 封装： | 7 X 7 MM, 0.50 MM PITCH, ROHS COMPLIANT, PLASTIC, MO-195AD, BGA-139 |
| 文件页数： | 50/75页 |
| 文件大小： | 3848K |
| 代理商： | PC13892VKR2 |
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Analog Integrated Circuit Device Data
54
Freescale Semiconductor
13892
FUNCTIONAL DEVICE OPERATION
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: MC13892VK and MC13892VL in 139, 186 MAPBGA packages.
Main characteristics of SWBST are summarized in
SWLED
The supply to the serial LEDs is provided by an inductive
boost switcher as illustrated in Figure 9. The boost converter
is automatically enabled when one or more backlight drivers
are enabled.
Figure 9.
The boost converter output voltage is adapted
automatically to the load such that the headroom on the
active LED drivers is maintained at a sufficient level (output
voltage range from BP to 25.5 V). This allows for a very
efficient backlighting scheme. The control is time continuous.
When accounting for the diode drop and the driver headroom,
the total available supply for the LEDs will be sufficient for up
to 6 white LEDs in series. The boost converter runs at 2/3 of
the switcher PLL generated frequency.
PROTECTION FUNCTIONS
Current Limit
SWBST has an over-current limit protection of 1.5 A. A
portion of the output current is sensed across an internal
sense resistor which creates a drop that is then compared to
a fixed voltage. The output of the comparator is the flag of
over-current in the output driver of the boost converter. When
an over-current is detected, the PWM cycle is stopped by
turning off the internal NMOS, which allows the current in the
coil to decrease.
Over-voltage Protection
The boost converter contains a two phase over-voltage
detection to prevent the SWLEDOUT from rising higher than
28V.
LDOS
The following is a description of the linear regulators. For
convenience these regulators are named to indicate their
typical or possible applications, but the supplies are not
limited to these uses, and may be applied to any loads within
the specified regulator capabilities.
A low power standby mode controlled by STANDBY is
provided in which the bias current is aggressively reduced.
This mode is useful for deep sleep operations, where certain
supplies cannot be disabled, but active regulation can be
tolerated with lesser parametric requirements. The output
drive capability and performance are limited in this mode.
Apart from the integrated linear regulators, there are also
GPO output pins provided to enable and disable discrete
regulators or functional blocks, or to use as general purpose
outputs for any system need. For example, one application
may be to enable a battery pack thermistor bias in
synchronization with timed ADC conversions.
All regulators use the main bandgap as the reference. The
main bandgap is bypassed with a capacitor at REFCORE.
The bandgap and the rest of the core circuitry is supplied
from VCORE. The performance of the regulators is directly
dependent on the performance of VCOREDIG and the
bandgap. No external DC loading is allowed on VCOREDIG
or REFCORE. VCOREDIG is kept powered as long as there
is a valid supply and/or coin cell. The following table captures
the main characteristics of the core circuitry.
相关PDF资料 |
PDF描述 |
|---|---|
| PC13892VK | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA139 |
| PC13892JVLR2 | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA186 |
| PC13892VL | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA186 |
| PC13892JVKR2 | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA139 |
| PC13892VLR2 | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA186 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PC13892VL | 制造商:Freescale Semiconductor 功能描述:5/28V BCK/BST PMUIC12X12 - Bulk |
| PC13892VL/R2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Power Management and User Interface IC |
| PC13933A | 制造商:Thomas & Betts 功能描述:MTG FLNGE, 400A MXGRD M.I. |
| PC13CSL | 制造商:Porter Cable 功能描述:13 Amp 7 1/4" Laser Circular Saw 制造商:PORTER-CABLE 功能描述:13 AMP CIRCULAR SAW |
| PC13P11A10 | 制造商:WINCHESTER 制造商全称:Winchester Electronics Corporation 功能描述:POWER CONNECTOR CODE ORDER CHART |
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