ABSOLUTE MAXIMUM RATINGS
PV
IN
,V
IN
.............................................................................................. 6V
All other pins .............................................................. -0.3V to V
IN
+0.3V
PV
IN
, P
GND
, LX current ........................................................................ 2A
Storage Temperature .................................................. -65
°C
to 150
°C
Operating Temperature ................................................. -40°C to +85°C
Junction Temperature ................................................................. 125°C
Theta JA (10 Pin MSOP) .......................................................... 214°C/w
Theta JA (10 Pin DFN) ............................................................ 48.7°C/w
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation
sections of the specifications below is not implied. Exposure to
absolute maximum rating conditions for extended periods of time may
affect reliability.
ELECTRICAL CHARACTERISTICS
V
IN
=PV
IN
=V
SDN
=3.6V, V
OUT
=V
FB
, I
O
= 0mA, T
AMB
= -40°C to +85°C, The
♦
denotes the specifications which
apply over the full operating temperature range, unless otherwise specified.
PARAMETER
Input Voltage Operating
Minimum Output Voltage
FB Set Voltage, Vr
MIN
UVLO
1.0
0.784
0.800
0.816
±4
Overall Accuracy
±5
On-Time Constant - KON Min,
T
ON
= KON/(V
IN
-V
OUT
)
Off-Time Min, T
OFF
= K
OFF
/V
OUT
Constant - K
OFF
Off-Time Blanking
PMOS Switch Resistance
NMOS Switch Resistance
Inductor Current Limit
LX Leakage Current
1.0
1.5
1.6
2.25
2.4
100
0.3
0.3
1.25
0.01
96
Power Efficiency
92
Minimum Guaranteed Load Current
V
IN
Quiescent Current
V
IN
Shutdown Current
V
OUT
Quiescent Current
V
OUT
Shutdown Current
800
900
20
1
2
1
30
500
5
500
mA
µA
nA
µA
nA
♦
♦
♦
♦
♦
TYP
MAX
5.5
UNITS
V
V
V
♦
♦
CONDITIONS
Result of I
Q
measurement at
V
IN
= PV
IN
= 5.5V
FB Set Voltage, Vr
25° C, IO = 200mA Close
Loop. LI = 10µH,
Measured at V
IN
= 5.5V, no
load, T
AMB
= 0° C to 70° C
♦
♦
♦
%
Measured at V
IN
= 3.6V, 200mA
load, Close Loop
Close Loop, LI = 10µH, C
OUT
=
22µF
Inductor current limit tripped,
V
FB
= 0.5V Measured at V
'
= 2V
T
AMB
=27° C
3.0
3.2
V*µs
V*µs
ns
0.6
0.6
1.50
3
A
µA
♦
♦
♦
♦
IPMOS = 200mA
INMOS = 200mA
V
FB
= 0.5V
D0 = D1 = 0
V
OUT
= 2.5V, IO = 200mA
T
AMB
= 27° C
%
V
OUT
= 3.3V, IO = 800mA
T
AMB
=27° C
V
OUT
= 3.3V, V
IN
= 3.6V and
V
IN
= 5.5V
D1 = D0 = 0V
V
OUT
= 3.3V
D1 = D0 = 0V
Date: 2/1/05
SP6654 High Efficiency 800mA Synchronous Buck Regulator
© Copyright 2005 Sipex Corporation
2
SIPEX [ SIPEX CORPORATION ]
