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PDF LP6212 Data sheet ( Hoja de datos )
| Número de pieza | LP6212 | |
| Descripción | High Efficiency 6A Boost DC/DC Convertor | |
| Fabricantes | Lowpowersemi | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LP6212 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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Preliminary Datasheet
LP6212
High Efficiency 6A Boost DC/DC Convertor
General Description
The LP6212 is a current mode boost DC-DC converter.
Its PWM circuitry with built-in 6A Current power
MOSFET makes this converter highly efficient.
Selectable high switching frequency allows faster loop
response and easy filtering with a low noise output.
The non-inverting input its error amplifier is connected
to an internal 0.6V precision reference voltage.
Soft-Start time can be programmed with an external
capacitor, which sets the input current ramp rate.
Current mode control and external compensation
network make it easy and flexible to stabilize the
system.
Ordering Information
LP6212 □ □ □
Features
Up to 94% efficiency
Output to Input Disconnect at Shutdown Mode
Shut-down current:<1uA
Output voltage Up to 5V/2.1A
Internal Compensation
1.2MHz fixed frequency switching
High switch on current:6A
Available in ESOP8 Package
Applications
Battery products
Host Products
Panel
Pin Configurations
TOP VIEW
F: Pb-Free
Package Type
SP: ESOP8
Typical Application Circuit
Marking Information
Device
LP6212
Marking
LPS
LP6212
XXXX
Package
ESOP8
Shipping
3K/REEL
LP6212 –00 Version1.0 Datasheet May.-2014
www.Lowpowersemi.com - -
Page 1 of 6
1 page  
Preliminary Datasheet
LP6212
Operation Information
The LP6212 uses a 1.2MHz fixed frequency,
current-mode regulation architecture to regulate the
output voltage. The LP6212 measures the output
voltage through an external resistive voltage divider
and compares that to the internal 0.6V reference to
generate the error voltage to the inductor current to
regulate the output voltage. The use of current-mode
regulation improves transient response and control
loop stability.
When the LP6212 is disabled (EN=Low), both power
switches are off. There is no current path from SW to
OUT. Therefore, the output voltage discharges to
ground. When the LP6212 is enabled (EN=High),a
limited start-current charges the output voltage rising to
SW, then TH part operates in force PWM mode for
regulating the output voltage to the target value. At the
beginning of each cycle, the N-channel MOSFET
switch is turned on, forcing the inductor current to rise,
The current at the source of the switch is internally
measured and converted to a voltage by the current
sense amplifier. That voltage is compared to the error
voltage. When the inductor current rises sufficiently, the
PWM comparator turns off the switch, forcing the
inductor current to the output capacitor through the
internal P-Channel MOSFET rectifier, which forces the
inductor current to decrease. The peak inductor current
is controlled by the error voltage. Thus the output
voltage controls the inductor current to satisfy the lode.
Setting the Output Voltage
Set the output voltage by selecting the resistive voltage
divider ratio. The voltage divider drops the output
voltage to the 0.6V feedback voltage. Use a 100K
resistor for R2 of the voltage divider. Determine the
high-side resistor R1 by the equation:
Vout=(R1/R2+1) x VFB
Vout=(R1/R2+1) x 0.6V
LP6212 –00 Version1.0 Datasheet May.-2014
www.Lowpowersemi.com - -
Page 5 of 6
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LP6212.PDF ] | |
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