SP6648 Datasheet, PDF (2/16 Pages) Sipex Corporation – Ultra-low Quiescent Current, High Efficiency Boost Regulator

LX, Vo, VBATT , LBON, FB to GND pin ................................ -0.3 to 6.0V
SHDN, LBI ........................................................... -0.3V to VBATT +1.0V
Vo, GND, LX Current ....................................................................... 2A
Reverse VBATT Current .............................................................. 220mA
Forward VBATT Current .............................................................. 500mA
Storage Temperature .................................................. -65 °C to 150°C
ABSOLUTE MAXIMUM RATINGS
Operating Temperature ................................................ -40°C to +85°C
Lead Temperature (Soldering, 10 sec) ....................................... 300 °C
ESD Rating ........................................................................ 1.5kV HBM
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 SPECIFICATIONS
V_BATT =V_SHDN = 2.6V, V_FB=0V, I_LOAD = 0mA, T_AMB= -40°C to +85°C, V_OUT = +3.3V, typical values at 27°C unless otherwise
noted. The ♦ denotes the specifications which apply over full operating temperature range -40*C to +85°C, unless otherwise
specified.
PARAMETER
MIN TYP MAX UNITS ♦
Input Voltage Operating Range, V_BATT 0.7
4.5
V
♦
Output Voltage Range, V_OUT
2.5
5.5
V
♦
Start-up Input Voltage, V_BATT
0.85 1.1
V♦
Under Voltage Lock-out/UVLO
0.5 0.61 0.7
V♦
Output Voltage, V_O
3.12 3.30 3.48 V ♦
Quiescent Current into V_O, I_QO
12
25
µA ♦
Quiescent Current into V_BATT, I_QB
250 750 nA ♦
Shutdown Current into V_O, I_SDO
1
500 nA ♦
Shutdown Current into V_BATT, I_SDB
250 750 nA ♦
Efficiency
84
%
92
%
Inductor Current Limit, I_PK = 1600/R_LIM 650 800 1000 mA ♦
1300 1600 2000 mA ♦
Output Current
100
mA
200
mA
150
mA
400
mA
Minimum Off-Time Constant K_OFF
0.5 1.0 1.5 V*µs ♦
Maximum On-Time Constant K_ON
Enable Valid to Output Stable
2.5 4.0 5.5 V*µs ♦
300 500 µs
NMOS Switch Resistance
0.30 0.6
Ω
♦
PMOS Switch Resistance
0.30 0.6
Ω
♦
FB Set Voltage, V_FB
1.19 1.25 1.31 V ♦
FB Input Current
1
100 nA ♦
LBI Falling Trip Voltage
0.56 0.61 0.66 V ♦
LBI Hysteresis
25
mV
Low Output Voltage for LBON, V_OL
0.4
V
♦
Leakage current for LBON
1
µA ♦
SHDN Input Voltage, Note 1
V_IL
V_IH
1.0
V_IL
V_IH
2.0
0.25
♦
V♦
0.5
♦
♦
SHDN Input Current
1
100 nA ♦
LX Pin Leakage
3
µA
CONDITIONS
After Startup
R_LOAD = 3kΩ
Internal Feedback Divider
V_OUT = 3.3V, V_FB = 1.5V, Toggle SHDN
V_OUT = 3.3V, V_FB = 1.5V
V_SHDN = 0V
V_SHDN = 0V, V_BATT = 2.6V
V_BATT = 1.3V, I_OUT = 100mA, R_{LIM =}2kΩ
V_BATT = 2.6V, I_OUT = 200mA, R_{LIM =}2kΩ
R_LIM = 2kΩ
R_LIM = 1kΩ
V_BATT = 1.3V, R_LIM = 4kΩ
V_BATT = 2.6V, R_LIM = 4kΩ
V_BATT = 1.3V, R_LIM =2kΩ
V_BATT = 2.6V, R_LIM =2kΩ
K_OFF ≤ T_OFF (V_OUT- V_BATT)
K_ON ≥ T_ON (V_BATT)
I_LOAD = 1mA
I_NMOS = 100mA
I_PMOS = 100mA
External feedback
V_FB =1.3V
V_BATT = 1.3V, I_SINK = 1mA
V_BATT = 1.3V, V_LBON = 3.3V
V_BATT = 1.3V
V_BATT = 1.3V
V_BATT = 2.6V
V_BATT = 2.6V
Note 1: SHDN must transition faster than 1V/100mS for proper operation.
Date: 7/19/04
SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
2
© Copyright 2004 Sipex Corporation