SP6655 Datasheet, PDF (2/16 Pages) Sipex Corporation – High Efficiency 400mA Synchronous Buck Regulator Ideal for portable designs powered with Li Ion battery

PV_IN,V_IN .............................................................................................. 6V
All other pins .............................................................. -0.3V to V +0.3V
IN
PV_IN, P_GND, LX current ........................................................................ 2A
Storage Temperature .................................................. -65 °C to 150 °C
Operating Temperature ................................................. -40°C to +85°C
Lead Temperature (Soldering, 10 sec) ....................................... 300 °C
ABSOLUTE MAXIMUM RATINGS
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=UV_IN=V_SDN=3.6V, V_OUT=V_FB, I_O = 0mA, T_AMB = -40°C to +85°C, typical values at 27°C unless otherwise noted.
PARAMETER
Input Voltage Operating
Range
Minimum Output Voltage
FB Set Voltage, Vr
MIN
UVLO
1.0
0.784
Overall Accuracy
(-40°C to 85°C)
(0°C to 70°C)
On-Time Constant - K_ON
1.5
Min, T_ON=K_ON/(V_IN-V_OUT)
Off-Time Constant - K_OFF
1.6
Min, T_OFF=K_OFF/V_OUT
Off-Time Blanking
Turn On Time
PMOS Switch Resistance
NMOS Switch Resistance
Inductor Current Limit
500
Power Efficiency
Minimum Guaranteed Load
400
Current
V_IN Quiescent Current
V_IN Shutdown Current
V_OUT Quiescent Current
V_OUT Shutdown Current
UVLO
2.55
Undervoltage Lockout
2.70
Threshold, V_IN falling
2.85
UVLO hysteresis
Battlo Trip Voltage, V_IN falling 265
Battlo Trip Voltage Hysteresis
BLON Low Output Voltage
BLON Leakage Current
Over-Temperature
Rising Trip Point
Over-Temperature Hysteresis
D1,D0 Leakage Current
D1,D0 Input Threshold Voltage 0.60
FB Leakage Current
LX Leakage
TYP
0.800
2.25
2.4
100
200
0.3
0.3
625
96
92
500
20
1
2
1
2.70
2.85
3.00
40
300
9
140
14
1
0.90
1.25
1
3
MAX UNITS CONDITIONS
5.5
V Result of I_Q measurement at V_IN=PV_IN=5.5V
0.816
±5
±4
3.0
3.2
400
0.6
0.6
750
V
V
%
V*µs
V*µs
ns
µs
Ω
Ω
mA
%
mA
25°C, I_O=200mA Close Loop. L_I = 10µH,
C_OUT = 22µF
Measured at V_IN=5.5V, no load and
V_IN=3.6V, 200mA load, Close Loop
Close Loop, L_I = 10µH,C_OUT = 22µF
Inductor current limit tripped, VFB=0.5V
Measured at V_OUT=1V
400mA Load
I_PMOS = 200mA
I_NMOS = 200mA
VFB=0.5V
V_OUT=2.5V, I_O=200mA
V_OUT=3.3V, I_O=400mA
30
500
5
500
2.85
3.00
3.15
335
0.4
1
µA V_OUT=3.3V, V_IN=3.6V and V_IN= 5.5V
nA D1=D0=0V
µA V_OUT = 3.3V
nA D1=D0=0V
D1=0V, D0=V_IN
V D1=V_IN, D0=0V
D1=V_IN, D0=V_IN
mV
mV Measured as V_IN-V_OUT
mV
V
V_IN=3.3V, I_SINK=1mA
µA V_BLON=3.6V
°C
°C
500
nA
V High to Low Transition
1.8
V Low to High Transition
100
nA FB=1V
5
µA D1,D0=0V, V_IN=3.6V
LX=0V,LX=V_IN+0.2V
Date: 7/12/04
SP6655 High Efficiency 400mA Synchronous Buck Regulator
2
© Copyright 2004 Sipex Corporation