SP6120B Datasheet, PDF (3/22 Pages) Sipex Corporation – Low Voltage, AnyFETTM, Synchronous ,Buck Controller Ideal for 2A to 10A, High Performance, DC-DC Power Converters

SPECIFICATIONS: continued
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
SOFTSTART
SS Charge Current
SS Discharge Current
COMP Discharge Current
COMP Clamp Voltage
SS Ok Threshold
SS Fault Reset
V_SS = 1.5V
V_SS = 1.5V
V_COMP = 0.5V, Fault Initiated
V_FB < 1.0V, VSS = 2.5V
25
50
70
2
5
7
200 500
-
2.0
2.4
2.8
1.7
2.0
2.2
0.2 0.25 0.3
SS Clamp Voltage
OVER CURRENT & ZERO CURRENT COMPARATORS
Over Current Comparator
Threshold Voltage
Rail to Rail Common Mode Input
2.0
2.4
2.8
32
43
54
ISN, ISP Input Bias Current
Zero Current Comparator
Threshold
UVLO
VISP - VISN
-
60
250
2
V_CC Start Threshold
V_CC Stop Threshold
ENABLE
Enable Threshold
Enable Pin Source Current
GATE DRIVER
ON
OFF
2.75 2.85 2.95
2.65 2.75 2.9
1.45
0.65
0.6
4
9
GH Rise Time
V_CC > 4.5V
-
40
110
GH Fall Time
V_CC > 4.5V
-
40
110
GL Rise Time
V_CC > 4.5V
-
40
110
GL Fall Time
V_CC > 4.5V
-
40
110
GH to GL Non-Overlap Time V_CC > 4.5V
0
60
140
GL to GH Non-Overlap Time V_CC > 4.5V
0
60
140
V_BST OK Threshold
V_CC = 3.0V, FB=1.15V, Search GL High 4.0
4.8
5.0
V_CC = 5.5V, FB=1.15V, Search GL High 7.3
7.8
8.3
Forced GL ON
V_BST < V_BST OK Threshold, FB =1.15V 200 350 650
Note 1: Specifications to -40°C are guaranteed by design, characterization and correlation with statistical process control.
UNITS
µA
µA
µA
V
V
V
V
mV
nA
mV
V
V
V
µA
ns
ns
ns
ns
ns
ns
V
V
ns
Date: 5/25/04
SP6120B Low Voltage, AnyFET^TM, Synchronous, Buck Controller
3
© Copyright 2004 Sipex Corporation