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88PL810/88PL815/88PL830
High Current, Adjustable 8 Level LDO Regulator
Document Status
Advance
This document contains design specifications for initial product development. Specifications may change
Information without notice. Contact Marvell Field Application Engineers for more information.
Preliminary This document contains preliminary data, and a revision of this document will be published at a later date.
Information Specifications may change without notice. Contact Marvell Field Application Engineers for more information.
Final
This document contains specifications on a product that is final release. Specifications may change without
Information notice. Contact Marvell Field Application Engineers for more information.
Revision Code: Rev. D
Advance
Technical Publication: 1.1
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Doc. No. MV-S102944-00, Rev. D
Document Classification: Proprietary Information
Page 2
88PL810/88PL815/88PL830
High Current, Adjustable LDO Regulator
Description
The 88PL810/88PL815/88PL830 devices are high current ultra-low-
dropout linear (LDO) regulators, featuring up to 235 mV @ 3A
dropout voltage and very low ground current. Quiescent current is
typically 1.5 mA and drops to 0.1
μA
in shutdown. The
88PL810/88PL815/88PL830 incorporate several features not
commonly found in other LDO’s. The devices protect themselves
from short circuit conditions by turning OFF and ON (“hiccup”),
thereby limiting temperature rise. In “Hot-Swap” applications, no
additional circuitry is required since the 88PL810/88PL815/88PL830
devices have an integrated “Soft Start” mode. Additionally, a unique
output voltage programming technique is used requiring a single
resistor (R
VSET
) to provide eight output voltage options.
The 88PL830 device’s output voltage can be adjusted to 8 different
levels between 2.4V and 2.75V (2% or 50 mV per step), for an input
voltage range of 2.7V to 3.6V. This voltage is defined by the user
with a single external resistor. The 88PL810 device is adjustable in
30 mV steps and the 88PL815 device is adjustable in 36 mV steps.
The 88PL810/88PL815/88PL830 devices are stable with a 10
μF
ceramic output capacitor. However, any other type of capacitor up
to 1000
μF
can be placed in parallel with it as long as the 10
μF
ceramic output capacitor is placed next to the
88PL810/88PL815/88PL830.
The “Hiccup” short-circuit protection is a feature that is not common
among other LDO’s. When the 88PL810/88PL815/88PL830 senses
a prolong over-current condition, it shuts off for about 6 ms and then
tries to start up again. This minimizes the thermal stress on the
88PL810/88PL815/88PL830 devices and reduces the current draw
from the input supply in over-current situations.
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
88PL810: 1.5V/1.0A
88PL815: 1.8V/1.5A
88PL830: 2.5V/3.0A
Ultra-low dropout (235 mV @ 3A typ.)
Input voltage range 2.7V to 3.6V
One resistor sets the output voltage level
Fixed Soft start ramp with any output
capacitor up to 1000 µF
“Hiccup” short circuit protection
Stable with ceramic output capacitors
Adjustable 8 level, programmable output
voltage in 2% steps
Logic controlled shutdown
0.1 µA supply current in shutdown
Stable with 0A load current
Lead-free packages
Low profile DPAK (T0-252) and QFN-5L
packages
-40°C to +125°C junction temperature range
Applications
•
•
•
•
Adjustable linear regulator for low-voltage
digital IC
PC add-in cards
High efficiency linear power supplies
Portable communication devices
Backup power supplies
3.3V PCI Express Bus
•
•
88PL830
VOUT
2
1
VSET
GND
3
VIN
4
Enable
Disable
5
Vin
3.3V
EN
TAB
EP
C1
10uF/6.3V
C2
10uF/6.3V
Vout
2.5V/3A
Typical LDO Regulator
Doc. No. MV-S102944-00, Rev. D
Page 3
Document Classification: Proprietary Information
88PL810/88PL815/88PL830
High Current, Adjustable 8 Level LDO Regulator
Section 1. Signal Description
1.1 Pin Configuration
VSET
1
Figure 1: DPAK (left) and 5 x 5 mm QFN-5L – Top View
Table 1: Product Table
Part Number
Output Voltage
1
88PL830
2.40, 2.45,
2.50
, 2.55, 2.60, 2.65, 2.70, 2.75
88PL815
1.728, 1.764,
1.80,
1.836, 1.872, 1.908, 1.944, 1.980
88PL810
1.44, 1.47,
1.50,
1.53, 1.56, 1.59, 1.62, 1.65
TAB
(GND)
VOUT
2
GND
3
GND
VIN
4
5
EN
Output Current
3.0A
1.5A
1.0A
1
Bold = If Vset is tied to ground then the Bold indicates the output voltage.
Doc. No. MV-S102944-00, Rev. D
Document Classification: Proprietary Information
Page 4
88PL810/88PL815/88PL830
High Current, Adjustable 8 Level LDO Regulator
1.2 Pin Description
1.2.1 Pin Types
This section provides the pin description of the 88PL810/88PL815/88PL830 devices. Table 2 shows
the pin types used in Table 3.
Table 2:
Pin Type
I
O
S
NC
GND
Table 3:
Pin #
Pin Type Definitions
Definition
Input only
Output only
Supply
Not Connected
Ground
1
2
3
4
5
Pin Description
Pin
Pin
Pin Function
Name Type
Connect to an external resistor that is connected to ground to set the output
voltage of the regulator. See the “Electrical Characteristics” table for resistor
values and Output Voltage Setting section.
VSET
I
The total capacitance across this pin and GND should be equal to 25pF or
less. Use a resistor with tolerance better than 2%. If this pin is connected to
GND, the output voltage will be set to 2.5V (88PL830), 1.8V (88PL815), or
1.5V (88PL810). Do not float this pin.
Output Voltage:
VOUT
0
Adjustable regulator output. A 10uF capacitor is connected between this pin
and the GND pin.
Ground:
GND
GND
Tab is connected to GND.
Input Voltage:
VIN
S
Input voltage supplies current to output. Connect a 10
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