ISL9113 Datasheet, PDF (1/15 Pages) Intersil Corporation – Undervoltage lockout

DATASHEET
Low Input Voltage and High Efficiency Synchronous
Boost Converter with 1.3A Switch
ISL9113
The ISL9113 provides a power supply solution for devices
powered by three-cell alkaline, NiCd, NiMH or one-cell
Li-Ion/Li-Polymer batteries. It offers either a fixed 5V or an
adjustable output option for USB-OTG or portable HDMI
applications. The device is guaranteed to supply 500mA from
a 3V input and 5V output and has a typical 1.3A peak current
limit. High 1.8MHz switching frequency allows for the use of
tiny, low-profile inductors and ceramic capacitors to minimize
the size of the overall solution.
The ISL9113 is an internally compensated, fully integrated
synchronous converter optimized for efficiency with minimal
external components. At light load, the device enters skip
mode and consumes only 20µA of quiescent current, resulting
in higher efficiency at light loads and maximum battery life.
The device is available in an 8 Ld DFN package and a 6 bump
WLCSP.
Related Literature
• AN1816, “ISL9113ERAZ-EVZ, ISL9113ER7Z-EVZ Evaluation
Board User Guide”
Features
• Up to 95% efficiency at typical operating conditions
• Input voltage range: 0.8V to 4.7V
• Output current: Up to 500mA (V_BAT = 3.0V, V_OUT = 5.0V)
• Low quiescent current: 20μA (typical)
• Logic control shutdown (I_Q < 1µA)
• Fixed 5V, 5.1V or adjustable output
• 1.2V EN high logic
• Output disconnect during shutdown
• Skip mode under light load condition
• Undervoltage lockout
• Fault protection: OVP (ADJ version only), OTP, short circuit
• 8 Ld 2mmx2mm DFN package and 6 bump
0.8mmx1.36mm WLCSP
Applications
• Products including portable HDMI and USB-OTG
• Smartphones
• Tablet and mobile internet devices
2.2µH
VBAT =
0.8V TO 4.7V
4.7µF
8
SW
7
VBAT
5
EN
VFAULT
1k _{4 FAULT}
2
VOUT
NC ³
1
PGND
AGND ⁶
VOUT =
5V/500mA
4.7µF
FIGURE 1. TYPICAL APPLICATION (ISL9113ER7Z)
100
V_BAT = 4.2V
95
V_BAT = 3.6V
90 ^{VBAT = 3.0V}
85
80
75
70
V_BAT = 2.3V
V_BAT = 1.2V
65
60
55
50
0.0001
0.001
0.01
V_OUT = 5.0V
0.1
1
LOAD CURRENT (A)
FIGURE 2. FIXED 5V EFFICIENCY (ISL9113ER7Z)
February 23, 2015
1
FN8313.3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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