2
Date: 7/28/04 SP6137 Wide Input, 900KHz Synchronous PWM Controll Copyright 2004 Sipex Corporation
PARAMETER
QUIESCENT CURRENT
V
CC
Supply Current
BST Supply Current
PROTECTION: UVLO
V
CC
UVLO Start Threshold
V
CC
UVLO Stop Threshold
V
CC
UVLO Hysteresis
UVIN Start Threshold
UVIN Stop Threshold
UVIN Hysteresis
ERROR AMPLIFIER REFERENCE
Error Amplifier Reference
Error Amplifier Reference
Over Line and Temperature
Error Amplifier Transconductance
Error Amplifier Gain
COMP Sink Current
COMP Source Current
V
FB
Input Bias Current
Internal Pole
COMP Clamp
COMP Clamp Temp. Coefficient
CONTROL LOOP: PWM COMPARATOR, RAMP & LOOP DELAY PATH
Ramp Amplitude
RAMP Offset
MIN
TYP
MAX
UNITS
CONDITIONS
1.5
0.2
mA
mA
V
FB
=0.9V (No switching)
V
FB
=0.9V (No switching)
0.4
4.00
3.80
4.25
4.05
200
2.5
2.2
300
4.5
4.4
V
V
mV
V
V
mV
2.3
2.0
2.65
2.35
0.792
0.788
0.800
0.800
0.808
0.812
V
V
2X Gain Config., Measure COMP/2
6
ms
dB
μ
A
μ
A
nA
MHz
V
mV/
°
C
60
150
150
50
4
2.5
-2
No Load
V
FB
= 0.9V, COMP = 0.9V
V
FB
= 0.7V, COMP = 2.2V
V
FB
= 0.8V
200
V
FB
=0.7V, T
A
= 25
°
C
0.92
1.1
1.1
1.28
V
V
T
= 25
°
C, RAMP COMP
until GH starts switching
RAMP Offset Temp. Coefficient
GH Minimum Pulse Width
Maximum Controllable Duty Ratio
-2
90
97
mV/
°
C
ns
%
180
92
Maximum Duty Ratio Measured just
before pulse skipping begins
Valid for 20 Cycles
Maximum Duty Ratio
Internal Oscillator Frequency
100
810
%
kHz
900
990
ELECTRICAL SPECIFICATIONS
Unless otherwise specified: -40
°
C < T
AMB
< 85
°
C, 4.5V < V
CC
< 5.5V, BST=V
CC
,SWN = GND = 0V, UVIN = 3.0V, CV
CC
=
10
μ
F, C
COMP
= 0.1
μ
F, CGH = CGL = 3.3nF, C
SS
= 50nF, Typical measured at V
CC
=5V. The
denotes the specifications
which apply over the full operating temperature range, unless otherwise specified.
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 ...............................................................................................27V
BST-SWN ......................................................................... -0.3V to 7V
SWN................................................................................... -1V to 20V
GH......................................................................... -0.3V to BST+0.3V
GH-SWN .........................................................................................7V
All other pins .......................................................... -0.3V to V
CC
+0.3V
Peak Output Current < 10us
GH,GL .............................................................................................2A
Storage Temperature .................................................. -65
C to 150
°
C
Power Dissipation .......................................................................... 1W
Lead Temperature (Soldering, 10 sec) ...................................... 300
°
C
ESD Rating .......................................................................... 2kV HBM
Thermal Resistance ............................................................. 41.9
°
C/W
ABSOLUTE MAXIMUM RATINGS