st763a STMicroelectronics, st763a Datasheet - Page 4

• Manufacturer Part Number: st763a
• Description: 3.3v Step Down Current Mode Pwm Dc-dc Converters
• Manufacturer: STMicroelectronics

ST763A SERIES
ELECTRICAL CHARACTERISTICS (V
TYPICAL APPLICATION CIRCUIT
4/10
Symbol
I
R
SUPPLY
V
I
I
V
SHDN
f
V
DS(on)
LEAK
V
V
LOCK
OSC
V
V
R
REF
V
V
CC
REF
IH
O
IL
C
O
O
Input Voltage
Output Voltage
Line Regulation
Load Regulatio
Power Efficency
Supply Current
SHDN Input High Threshold
SHDN Input Low Threshold
Shutdown Input Leakage
Current
Under Voltage Lockout
LX On Resistance
LX Leakage Current
Reference Voltage
Temeperature Reference
Drift
Switching Frequency
Compensation Pin
Impedance
Parameter
0.047 µF
1500 pF
V
V
I
I
I
ON Mode (Including Switch Current)
OFF Mode
V
I
V
T
T
O
O
O
LX
SHDN
REF
SS
CC
A
A
CC
CC
CC
CC
= 1 to 500mA
=300mA
=100mA
=500mA
= 25° C
= T
CC
= 4 to 11V
= 4.75 to 11V I
Falling
= 12V
MIN
470 pF
=5V, I
to T
GND
OUT
Test Conditions
Vcc
O
MAX
Lx
= 0mA, T
I
V
O
O
LX
=0 to 300mA
=0 to 500mA
= 0V
A
= T
MIN
STPS330U
22 µH
to T
+
100 µF
MAX
220 µF
, unless otherwise specified.)
3.135
3.135
Min.
1.18
159
3.3
2
Vout
0.005
7500
Typ.
0.13
1.25
200
3.3
3.3
0.6
0.2
2.7
88
90
10
50
+
1
1 µF
Vin
3.465
3.465
212.5
Max.
0.25
1.32
100
2.5
11
1
3
ppm/° C
%/mA
Unit
%/V
KHz
mA
nA
%
%
V
V
V
V
V
V
V
A
A