MP1519 – 1X, 1.5X, 2X CHARGE PUMP 4 WHITE LED DRIVER
MP1519 Rev. 1.9 www.MonolithicPower.com 2
10/8/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
TM
PACKAGE REFERENCE
Part Number* Package Temperature
MP1519DQ
QFN16
(3mm x 3mm)
–40°C to +85°C
*
For Tape & Reel, add suffix –Z (eg. MP1519DQ–Z)
For RoHS Compliant Packaging, add suffix –LF
(eg. MP1519DQ–LF–Z)
ABSOLUTE MAXIMUM RATINGS
(1)
V
BATT
to GND .............................................. 6.5V
Power Dissipation (QFN)........................... 1.0W
Logic Inputs to GND ................... –0.3V to +6.5V
Storage Temperature ..............–65°C to +150°C
Junction Temperature...............................150°C
Recommended Operating Conditions
(2)
Input Voltage VBATT...................... 2.5V to 5.5V
Operating Temperature .............–40°C to +85°C
Thermal Resistance
(3)
θ
JA
θ
JC
3x3 QFN16 ............................. 60 ...... 14... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1” square of 1 oz copper.
ELECTRICAL CHARACTERISTICS
V
BATT
= 5V, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
Input Supply Voltage V
BATT
2.5 5.5 V
V
BATT
at 1x to 1.5x Mode Switch V
BATT 1x-1.5x
I
LED
= 20mA, V
BATT
Decreasing,
V
LED
= 3.35V @ 20mA
3.6 V
V
BATT
at 1.5x to 2x Mode Switch V
BATT 1.5x-2x
I
LED
= 20mA, V
BATT
Decreasing,
V
LED
= 3.35V @ 20mA
2.8 V
V
BATT
at 2x to 1.5x Mode Switch V
BATT 2x-1.5x
V
BATT
Increasing,
V
LED
= 3.35V @ 20mA
3.1 V
V
BATT
at 1.5x to 1x Mode Switch V
BATT 1.5x-1x
V
BATT
Increasing,
V
LED
= 3.35V @ 20mA
3.8 V
Supply Current I
BATT
4 LEDs at 20mA, 2x Mode,
V
BATT
= 2.5V
164 180 mA
Supply Current Shutdown I
BATT SHDN
V
EN
= 0V 0.1 1 µA
Current Matching
(4)
I
LED MATCH
I
LED
= 20mA 1.5 5.0 %
Enable Voltage, High V
EN (HIGH)
2.0 2.2 V
Enable Voltage, Low V
EN (LOW)
0.8 1.0 V
Enable Pin Leakage I
EN
V
EN
= 5V 0.1 1 µA
Charge Pump Frequency F
CP
V
BATT
= 3.3V 1.0 1.3 1.6 MHz
Time to Standby Mode
(5)
T
OFF
Enable Switched Low 30 µs
Enable Pin PWM Frequency Limit F
HPWM
50 KHz
LED Current I
LED
R
SET
= 1.54k 18 20 22 mA
Notes:
4) Matching is defined as the difference of the maximum to minimum current divided by the sum of the maximum and minimum currents.
5) Standby mode switches to shutdown when the output voltage on LEDC drifts back to GND.
TOP VIEW
EXPOSED PAD
CONNECT TO PIN 8
PIN 1 ID
LED4
NC
GND
C1A
EN
RADJ
GND
C2B
1
2
3
4
13141516
8765
LEDC
C1BC2ABATT
BATTLED1LED2LED3
12
11
10
9
