sp7656en2-l-tr Exar Corporation, sp7656en2-l-tr Datasheet - Page 2

• Manufacturer Part Number: sp7656en2-l-tr
• Description: 600khz High Input Voltage, Internally Compensated Sp7656 Non-synchronous Step-down Dc/dc Voltage Regulator
• Manufacturer: Exar Corporation

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.
PVIN….............................................................. -0.3V to 30V
SVIN…………………………………………..….. -0.3V to 30V
Lx………………………….……………………….…-2V to 30V
ISET…………………………….……………………-2V to 30V
ELECTRICAL SPECIFICATIONS
Specifications are for T
Unless otherwise specified: V
ABSOLUTE MAXIMUM RATINGS
UVLO Turn-On Threshold
UVLO Turn-Off Threshold
UVLO Hysteresis
Operating Input Voltage
Range
Operating Input Voltage
Range
Operating VCC Current
Reference Voltage Accuracy
Reference Voltage Accuracy
Reference Voltage
Reference Voltage
Switching Frequency
Minimum ON-Pulse Duration
Minimum Duty Cycle
Maximum Duty Cycle
SVIN - VDR voltage difference
Overcurrent Threshold
ISET pin Input Current
OFF interval during hiccup
Soft start time
SHDN Threshold
SHDN Threshold Hysteresis
P-Channel FET ON
Resistance
P-Channel FET Source
leakage
2/19/08 SP7656 PowerBlox
PARAMETER
AMB
=T
J
=25C, and those denoted by ♦ apply over the full operating range, -40C< T
IN
=4.5V to 29V, C
0.594
0.588
MIN
510
100
270
4.2
4.0
4.5
4.5
0.8
25
7
3
IN
= 4.7F.
TYP
4.35
4.15
600
300
100
100
0.2
0.3
0.5
0.5
0.6
0.6
1.0
40
30
60
5
3
0.606
0.612
MAX
690
100
330
4.5
4.3
5.5
1.2
29
29
35
3
1
2
0
9
5
2
FB……………..................................................-0.3V to 5.5V
Storage Temperature..…….……………..…-65 C to 150 C
Junction Temperature..................................-40C to 125C
Lead Temperature (Soldering, 10 sec)......…………..300 C
UNITS
kHz
mA
mV
mV
mΩ
ms
ms
uA
uA
ns
%
%
%
%
V
V
V
V
V
V
V
V
V
♦
♦
♦
♦
♦
♦
♦
0C< T
0C< T
0C< T
VFB=1.2V
*See Duty Cycle restriction- applications section
Measure SVIN – VDR, SVIN>7V
Measure SVIN - ISET
V
VFB=0.58V, measure between VIN=4.5V
and first GATE pulse
Apply voltage to FB
ISET
Copyright 2007 EXAR Corporation
= SVIN
j
j
j
<85C
<85C
<85C
CONDITIONS
j
<85C.