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PDF UP6182 Data sheet ( Hoja de datos )
| Número de pieza | UP6182 | |
| Descripción | Dual Synchronous Buck Controller | |
| Fabricantes | uPI Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de UP6182 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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uP6182
Dual Synchronous Buck Controller with
5V/3.3V 100mA LDOs for Notebook System Power
General Description
Features
The uP6182 is a dual synchronous buck controller with
5V/3.3V 100mA LDOs for notebook system power supply
solution. A 250kHz VCLK output can be used for external
charge pump to generate gate drive voltage for load
switches.
The uP6182 supports high efficiency, fast transient response
and a combined power-good signal. The out of audio mode
maintains the switching frequency above audio frequency,
which eliminates noise in audio applications. The adaptive
on-time control provides a convenient and efficient
operation.
The uP6182 has internal soft-start to control the inrush
current. The soft-stop feature avoids negative output voltage
for undervoltage protection, overcurrent protection, and
shutdown by discharging output through an internal switch,
and by damping the inductor current.
Supply input voltages ranging from 5.5V to 26V and output
voltages from 2V to 5.5V. Other features include overcurrent
protection, overvoltage protection, power-up sequencing,
power OK output, and thermal shutdown. The uP6182 is
available in the space saving package VQFN4x4-24L,
specified from -40 OC to 85 OC.
Wide Input Voltage Range: 5.5V to 26V
Two Synchronous Buck Controllers
Output Voltage Range: 2V to 5.5V
Selectable Audio Mode in Light Load
Internal 1.6ms Output Voltage Softstart
Adaptive On Time Control Architecture
4500ppm/OC RDS(ON) Current Sensing
100mA 5V/3.3V LDO with Switches
1% 2V Reference Voltage Output
Power Good Output
OVP/UVP/OCP
Thermal Shutdown
VQFN4x4-24L
RoHS Compliant and 100% Lead (Pb)-Free
Pin Configuration
Applications
18 17 16 15 14 13
Notebook and Subnotebook System Power
Supplies
3-4 Cell Li-Ion Battery-Power Devices
Dual Output Supplies for DSP, Memory, Logic
and Microprocessor
LGATE1 19
PHASE1 20
UGATE1 21
BOOT1 22
POK 23
25 PGND
12 LGATE2
11 PHASE2
10 UGATE2
9 BOOT2
8 LDO3
Ordering Information
Order Number Package Type
uP6182AQAG VQFN4x4 - 24L
Remark
VO1 24
7 VO2
123456
Note: uPI products are compatible with the current IPC/
JEDEC J-STD-020 requirements. They are halogen-free,
RoHS compliant and 100% matte tin (Sn) plating that are
suitable for use in SnPb or Pb-free soldering processes.
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. F00, File Name: uP6182-DS-F0001
1
Free Datasheet http://www.datasheet4u.com/
1 page  
VIN
VREF
LDO5
EN
EN
uP6182
Functional Block Diagram
Soft Start
Control
EN
150 OC
/140OC
LDO3
VO1
BOOT1
UGATE1
PHASE1
LGATE1
VFB1
EN1
SKIPSEL
TONSEL
GND
EN0
Switcher Controller
Latch off
Control
Oscillator
Switcher Controller
EN
VO2
BOOT2
UGATE2
PHASE2
LGATE2
VFB2
EN2
POK
GND
VCLK
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. F00, File Name: uP6182-DS-F0001
5
Free Datasheet http://www.datasheet4u.com/
5 Page 
uP6182
Electrical Characteristics
Parameter
Symbol
Test Conditions
Logic threshold and setting conditions
EN1, EN2
VENx Hysteresis
200kHz/250kHz
TON Logic Setting Voltage
245kHz/305kHz
VTON 300kHz/375kHz
365kHz/460kHz
PWM only
SKIP Logic Setting Voltage
VSKIP
Auto Skip
Out of Audio Auto Skip
Protection: Current Sense
ENx Source Current
IEN VENx = 920mV, TA= 25 OC
ENx Current Temp. Coef
TCIEN On the basis of 25 OC
OCP Comp. Offset
Maximum OCL setting
Zero cross detection comparator
Offset
VOCLoff
VOCLmax
((VENx-GND-0.2)/9 -VGND-LLx) Voltage,
VENx-GND = 920mV
VENx = 5V
VZC VGND-LLx voltage
Current limit threshold setting range
Protection: UVP & OVP
VTRIP VENx-GND Voltage
OVP Trip Threshold
OVP Prop Delay
Output UVP Trip Threshold
Output UVP Prop Delay
Output UVP Enable Delay
UVLO
VOVP
TOVPDEL
VUVP
TUVPDEL
TUVPEN
OVP detect
UVP detect
Hysteresis
LDO5 UVLO Threshold
Wake up
VUVLDO5 Hysteresis
LDO3 UVLO Threshold
Thermal Shutdown
VUVLDO3 Shutdown
Thermal SDN Threshold
Shutdown temperature
TSDN Hysteresis
Min Typ Max Units
10 30 60 mV
-- -- 1.5 V
1.9 -- 2.1 V
2.7 -- 3.6 V
4.7 -- -- V
-- -- 1.5 V
1.9 -- 2.1 V
2.7 -- -- V
9.2 10 10.8 uA
-- 4500 --
ppm
/OC
-5 0
5 mV
185 205 225 mV
-5 0
5 mV
0.515 --
2V
110 115 120
-- 2.0 --
55 60 65
-- 10 --
25 32 40
%
us
%
%
us
4.1 4.2 4.3
0.22 0.32 0.42
-- VO2-1 --
V
V
V
-- 150 --
-- 10 --
OC
OC
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. F00, File Name: uP6182-DS-F0001
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet UP6182.PDF ] | |
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