PMB8818TP Ericsson Power Modules, PMB8818TP Datasheet - Page 28

• Manufacturer Part Number: PMB8818TP
• Description: DC/DC Power Supply Single-OUT 0.75V to 5.5V 16A 80W 10-Pin
• Manufacturer: Ericsson Power Modules
• Type: Step Downr
• Series: PMBr

Specifications of PMB8818TP

• Output Current: 16 A
• Output Voltage: 0.75 to 5.5 V
• Input Voltage: 12 V
• Number Of Outputs: 1
• Output Power: 80 W
• Input Voltage Range: 8.3 V to 16 V
• Output Voltage (channel 1): 0.75 V to 5.5 V
• Output Current (channel 1): 16 A
• Package / Case Size: SIP
• Output Type: Non-Isolated
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Operating Information
Output Voltage Adjust (V
All PMB 8000 Series DC/DC regulators have an Output
Voltage adjust pin (Vadj). This pin can be used to adjust the
output voltage above output voltage initial setting (0.75 V).
When increasing the output voltage the maximum power
rating of the converter remains the same, and the output
current capability will therefore decrease correspondingly.
To increase the output voltage a resistor or a voltage signal
should be connected/applied between Vadj pin and GND,
pin 5. The resistor/voltage signal value for some standard
output trims are given below, for other voltage set points
use the formulas to calculate the correct resistor or voltage
signal. For output voltages of 5.25 V and higher the input
voltage is restricted to maximum 14 Vin.
Formula 1: Radj = (10 500 / (Vout – 0.7525)) – 1000 (ohm)
Formula 2: Vtrim = (0.7 – 0.0667 x (Vout – 0.7525)) (V)
Input Voltage
The input voltage range 8.3…16 Vdc makes the PMB 8000
easy to use in intermediate bus applications when pow-
ered by a non-regulated bus converter or a regulated bus
converter. For output voltage trims over 5.25 Vout the input
voltage must be reduced to a maximum of 14 V in order to
maintain specified data.
PMB 8818T P Datasheet
Vout (V)
0.75
5.00
5.50
1.0
1.2
1.5
1.8
2.5
3.3
Increase
Circuit configuration for output voltage adjust
+Out
Sense
V adj
GND
R adj
Radj (kohm)
Load
41.42
22.46
13.05
9.024
5.009
3.122
1.472
1.212
adj
Open
)
Vtrim (V)
0.684
0.670
0.650
0.630
0.583
0.530
0.417
0.383
Open

Remote Control (RC)
Standard Version with "positive logic".
Turn off input voltage
The PMB 8000 Series DC/DC regulators monitor the input
voltage and will turn on and turn off at predetermined levels.
The minimum hysteresis between turn on and turn off input
voltage is 0.2 V where the turn on input voltage is the high-
est.
Option "negative logic"
The RC pin may be used to turn on or turn off the regulator
using a suitable open collector function.Turn off is achieved
by connecting the RC pin to the input voltage. The regulator
will run in normal operation when the RC pin is left open.
The RC pin may be used to turn on or turn off the regulator
using a suitable open collector function. Turn off is achieved
by connecting the RC pin to ground. The regulator will run in
normal operation when the RC pin is left open.
RC
Low level
referenced to GND
Open
RC
High level
referenced to GND
Open
GND
GND
+IN
V i
Regulator
condition
OFF
ON
Regulator
condition
OFF
ON
EN/LZT 146 066 R2A © Ericsson Power Modules, April 2007
RC
min
-0.3
min
RC
1.7
1.7
Module
Module
+IN
V i
typ
typ
max
max
0.3
16
16
Unit
Unit
V
V
V