SP6120B Datasheet, PDF (2/22 Pages) Sipex Corporation – Low Voltage, AnyFETTM, Synchronous ,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters

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.
V_CC ............................................................................... 7V
BST ........................................................................ 13.2V
BST-SWN .................................................................... 7V
SWN .................................................................. -1V to 7V
GH ..................................................... -0.3V to BST +0.3V
GH-SWN ..................................................................... 7V
All Other Pins ....................................... -0.3V to V_CC +0.3V
Peak Output Current < 10µs
GH, GL ........................................................................ 2A
Operating Temperature Range
SP6120C ................................................ 0°C to +70°C
SP6120E .............................................. -40°C to +85°C
Junction Temperature, T_J ...................................... +125°C
Storage Temperature Range .................. -65˚C to +150˚C
Power Dissipation
Lead Temperature (soldering 10 sec) ................... +300˚C
ESD Rating ........................................................ 2kV HBM
SPECIFICATIONS
Unless otherwise specified: 3.0V < V_CC <5.5V, 3.0V < BST < 13.2V, R_OSC = 18.7kΩ, C_COMP = 0.1µF, C_SS = 0.1µF, ENABLE =
3V, CGH = CGL = 3.3nF, V_FB = 1.25V, ISP = ISN = 1.25V, SWN = GND = PGND = 0V, -40°C < T_AMB <85°C (Note 1)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
QUIESCENT CURRENT
V_CC Supply Current
V_CC Supply Current (Disabled)
BST Supply Current
ERROR AMPLIFIER
No Switching
ENABLE = 0V
No Switching, V_BST = V_CC
No Switching, V_CC = 5V, V_BST = 10V
-
0.95 1.8
mA
-
5
20
µA
-
1
20
µA
-
100 150
µA
Error Amplifier Transconductance
600
µs
COMP Sink Current
COMP Source Current
COMP Output Impedence
V_FB = 1.35V, COMP = 0.5V, No Faults 15
35
65
µA
V_FB = 1.15V, COMP = 1.6V
15
35
65
µA
3
MΩ
V_FB Input Bias Current
REFERENCE
-
60
100
nA
Error Amplifier Reference
Trimmed with Error Amp in Unity Gain 1.238 1.250 1.262 V
V_FB 3% Low Comparator
V_FB 3% High Comparator
OSCILLATOR & DELAY PATH
3
%V_REF
3
%V_REF
Oscillator Frequency
270 300 330 kHz
Oscillator Frequency #2
Duty Ratio
R_OSC = 10.2kΩ
Loop In Control -100% DC possible
450 500 550 kHz
95
%
R_OSC Voltage
Information Only - Moves
with Oscillator Trim
0.65
V
Minimum GH Pulse Width
V_CC > 4.5V, Ramp up COMP
Voltage > 0.6V until GH starts
Switching
120 250
ns
Date: 5/25/04
SP6120B Low Voltage, AnyFET^TM, Synchronous, Buck Controller
2
© Copyright 2004 Sipex Corporation