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U8021L-S14-R Datasheet(PDF) 5 Page - Unisonic Technologies

Part # U8021L-S14-R
Description  VOLTAGE MODE PWM CONTROLLER WITH LINEAR POWER REGULATOR
PDF  6 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

U8021L-S14-R Datasheet(HTML) 5 Page - Unisonic Technologies

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U8021
Preliminary
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
5 of 6
www.unisonic.com.tw
QW-R502-A13.a
ELECTRICAL CHARACTERISTICS
(Unless specified: VCC= 5V~16V, VFB=VOUT, VBST-VPN=5V~8.2V, TA=-25°C~85°C)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
General
VCC Supply Voltage
VCC
4
16
V
VCC Quiescent Current
IQVCC
VCC=12V, VBST-VPN=8.2V
5
7
mA
VCC Under Voltage Lockout
UVVCC
VHYST=100mV
4
V
BST to PN Supply Voltage
VBST_PN
4
10
V
BST Quiescent Current
IQBST
VCC=12V, VBST-VPN=8.2V
3
mA
Internal LDO
LDO Output
VDRV
8.6V<VCC<16V
8
V
Dropout Voltage
VDROP
4V<VCC<8.6V
0.4
V
Linear Section
Reference Voltage
VOL
LDFB=VOL, TA=25°C, VCC=12V
0.65
0.75
0.85
V
Load Regulation
IO=0~1A, VIN=3.3V, VCC=12V
0.4
%
Line Regulation
VIN=3.2V~3.4V, VCC=12V
0.4
%
VCC Supply Rejection
VIN=3.3V, VCC=10V~14V
0.4
%
Gate Sourcing Current
VGATE=6.5V
1
mA
Gate Sinking Current
VGATE=6.5V
1
mA
LDFB Input Bias Current
LDFB=.5V
-0.2
-1.0
uA
Soft Start Time
VIN=3.3V, VCC=12V TA=25°C
1.5
ms
Switching Section
Reference Voltage
VREF
TA=25°C, VCC=12V
0.495
0.500
0.505
V
Load Regulation
IO=0.2~4A
0.4
%
Line Regulation
VCC=10V~14V
0.4
%
Operating Frequency
FS
500
600
700
KHz
Ramp Amplitude (Note 2)
Vm
0.8
V
Maximum Duty Cycle (Note 2)
DMAX
97
%
Minimum On-Time (Note 2)
TON_MIN
125
ns
DH Rising/Falling Time
tSRC_DH
6V Swing at CL=3.3nF,
VBST-VPN=8.2V
40
ns
tSINK_DH
25
DL Rising/Falling Time
tSRC_DL
6V Swing at CL=3.3nF,
VDRV=8.2V
30
ns
tSINK_DL
40
DH, DL Nonoverlapping Time
30
ns
Voltage Error Amplifier
Output Source Current
0.9
mA
Output Sink Current
0.9
mA
Notes: 1. This device is ESD sensitive. Use of standard ESD handling precautions is required.
2. Guaranteed by design, not tested in production.



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