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PT5800 Series
18-A 5-V Input Adjustable
Integrated Switching Regulator
SLTS171A JANUARY 2003 - REVISED - MARCH 2003
Standard Application
Cin
= Required 820F
Cout = Required 330F
Ordering Information
PT5801
H = 3.3 Volts
PT5802
H = 2.5 Volts
PT5803
H = 1.8 Volts
PT5804
H = 1.5 Volts
PT5805
H = 1.2 Volts
PT5806
H = 1.0 Volts
Pin
Function
1Vo Adjust
2
Inhibit*
3
Margin Dn*
4
Margin Up*
5Vin
6Vin
7Vin
8
Sense(–)
9
GND
10
GND
11
GND
12
GND
13
GND
14
Vout
15
Vout
16
Vout
17
Vout
18
Sense(+)
Features
5V Input
18A Output Current
DSP Compatible
Low-Profile (8mm)
>90% Efficiency
Output Margin Control (±5%)
Adjustable Output Voltage
On/Off Inhibit Function
Pre-Bias Startup Capability
Pin-Out Information
* Denotes negative logic:
Open = Normal operation
Ground = Function active
Description
The PT5800 Excalibur series of integrated
switching regulators (ISRs) combines outstand-
ing power density with a comprehensive list of
features. They are an ideal choice for applications
where board space is a premium and performance
cannot be compromised. These modules provide
18A of output current, yet are housed in a low-
profile, 18-pin package that is almost half the
size of the previous product generation. The
integral copper case construction requires no
heatsink, and offers the advantages of solderabil-
ity and a small footprint (0.736 in for suffix ‘N’).
Both through-hole and surface mount pin con-
figurations are available.
The PT5800 series operates from a 5-V input
bus and provides a convenient point-of-load power
source for the industry’s latest high-performance
DSPs and microprocessors. The series includes
output voltage options as low as 1.0VDC.
Other features include external output voltage
adjustment, a ±5% margin control, on/off inhibit,
short circuit protection, thermal shutdown, and a
differential remote sense.
PT Series Suffix (PT1234 x )
Case/Pin
Order
Package
Configuration
Suffix
Code
Vertical
N
(EPP)
Horizontal
A
(EPQ)
SMD
C
(EPS)
(Reference the applicable package code draw-
ing for the dimensions and PC board layout)
Over-Current Protection
Over-Temperature Protection
Small Footprint
(0.736 in, Suffix ‘N’)
Surface Mount Compatible
IPC Lead Free 2
PT5800
V
o Adjust
Margin Up
Margin Dn
V
IN
9–13
4
118
14–17
5, 6, 7
8
2
L
O
A
D
C
IN
820F
(Required)
+
C
OUT
330F
(Required)
+
Inhibit
GND
V
OUT
3
Sense(+)
Sense(–)