SP6138 Datasheet, PDF (2/17 Pages) Sipex Corporation – Synchronous Buck Controller

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 maxi-
mum rating conditions for extended periods of time may affect reliability.
VCC .................................................................................................. 6V
VIN .............................................................................................. 24.5V
BST................................................................................................ 30V
BST-SWN......................................................................................... 7V
SWN.....................................................................................-2V to 24V
GH...........................................................................-0.3V to BST+0.3V
GH-SWN.......................................................................................... 6V
ABSOLUTE MAXIMUM RATINGS
Peak Output Current < 10µs
GH,GL.............................................................................................. 2A
Storage Temperature................................................... -65°C to 150°C
Power Dissipation........................................................................... 1W
ESD Rating........................................................................... 2kV HBM
Thermal Resistance.............................................................. 41.9°C/W
All other pins............................................................-0.3V to VCC+0.3V
ELECTRICAL SPECIFICATIONS
Unless otherwise specified: -40°C < T_AMB < 85°C, 4.5V < V_CC < 5.5V, BST=V_CC, SWN = GND = PGND = 0.0V, UV_IN = 3.0V, CV_CC
= 10µF, C_COMP = 0.1µF, CGH = CGL = 3.3nF, C_SS = 50nF, R_PWRGD = 10KΩ.
PARAMETER
QUIESCENT CURRENT
VIN Supply Current
VCC Supply Current
BST Supply Current
PROTECTION: UVLO
VCC UVLO Start Thresh-
old
VCC UVLO Hysteresis
MIN
4.00
150
TYP
1.5
1.5
0.2
4.25
200
UVIN Start Threshold
2.35 2.50
UVIN Hysteresis
200 300
VIN Start Threshold
9.0 9.5
VIN Hysteresis
300
Enable Pullup Current
0.4
ERROR AMPLIFIER REFERENCE
Error Amplifier Reference 0.792 0.800
Error Amplifier Reference
Over Line and Temperature
0.788
0.800
COMP Sink Current
70 150
COMP Source Current
-230 -150
VFB Input Bias Current
1
50
COMP Common Mode
Output Range
1.9 3.0
COMP Pin Clamp Voltage 3.2 3.5
MAX
3.0
3.0
0.4
4.5
250
2.65
400
10.0
0.808
0.812
230
-70
100
3.2
3.8
UNITS CONDITIONS
mA VFB = 1V (no switching)
mA VFB = 1V (no switching)
mA VFB = 1V (no switching)
V
mV
V
Apply voltage to UVIN
pin
mV
Apply voltage to UVIN
pin
V UVIN Floating
mV UVIN Floating
µA Apply voltage to EN pin
V 2X Gain Config.
V
µA
µA
nA
V
V VFB = 0.7V
Oct 24-06 Rev J
SP6138 Synchronous Buck Controller

© 2006 Sipex Corporation