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PDF ISL9307 Data sheet ( Hoja de datos )
| Número de pieza | ISL9307 | |
| Descripción | 3MHz Dual 1500mA Step-Down Converters and Dual Low-Input LDOs | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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3MHz Dual 1500mA Step-Down Converters and Dual
Low-Input LDOs
ISL9307
The ISL9307 is an integrated mini Power Management IC
(mini-PMIC) ideal for applications for powering low-voltage
microprocessor or multiple voltage rails with a battery as an
input source, such as a single Li-ion or Li-polymer. ISL9307
integrates two high-efficiency, 3MHz, synchronous step-down
converters (DCD1 and DCD2) and two low-input, low-dropout
linear regulators (LDO1 and LDO2).
The 3MHz PWM switching frequency allows the use of very
small external inductors and capacitors. Both step-down
converters can enter skip mode under light load conditions to
further improve efficiency and maximize battery life.
The ISL9307 features EN pins for each channel, thus allowing
startup delay for power sequencing.
The ISL9307 also provides two 300mA low-dropout (LDO)
regulators. The input voltage range is 1.5V to 5.5V, which
allows them to be powered from one of the on-chip step-down
converters or directly from a battery. The default LDO power-up
output comes with factory pre-set fixed output voltage options
between 0.9V and 3.3V.
The ISL9307 is available in a 4mmx4mm 16 Ld TQFN.
Features
• Dual 1500mA, Synchronous Step-down Converters and Dual
300mA, General-purpose LDOs
• Input Voltage Range
- DCD1/DCD2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5V to 5.5V
- VINLDO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to 5.5V
• Adjustable Output Voltage
- VODCD1/VODCD2 . . . . . . . . . . . . . . . . . . . . . . . . 0.8V to VIN
• 50μA IQ (Typ) with DCD1/DCD2 in Skip Mode; 20μA IQ (Typ)
for each Enabled LDO
• EN Pins for DCD1/DCD2 and LDO1/LDO2
• Small, Thin, 4mmx4mm TQFN
Applications
• Cellular Phones, Smart Phones
• PDAs, Portable Media Players, Portable Instruments
• Single Li-ion/Li-polymer Battery-Powered Equipment
• DSP Core Power
2.5V TO 5.5V
C1
10µF
1.5V TO 5.5V
C2
1µF
www.DataSheet.co.kr
V IN D C D 1
V IN D C D 2
ENDCD1
ENDCD2
ENLDO1
ENLDO2
VINLDO
GNDDCD1
ISL9307
GNDDCD2
SW 1
FB1
SW 2
FB2
VOLDO1
VOLDO2
GNDLDO
L1 = 1.5µH
R1
L2 = 1.5µH
R3
C6
1µF
1500m A
C4
R2 10µF
1500m A
C5
R4 10µF
300m A
300m A
C7
1µF
NOTE: ONLY FOR ADJUSTABLE OUTPUT VERSION . FOR FIXED
OUTPUT VERSION, DIRECTLY CONNECT THE FB PIN TO THE
OUTPUT OF THE BUCK CONVERTER.
FIGURE 1. TYPICAL APPLICATION DIAGRAM
February 24, 2012
FN7931.2
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2012. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
ISL9307
Absolute Maximum Ratings (Refer to Ground)
SW1, SW2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.5V to 6.5V
FB1, FB2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 3.6V
GNDDCD1, GNDDCD2, GNDLDO. . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 0.3V
All other pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V
ESD Ratings
Human Body Model (Tested per JESD22-A114F) . . . . . . . . . . . . . . .3.5kV
Machine Model (Tested per JESD22-A115-A) . . . . . . . . . . . . . . . . . 2.2kV
Charged Device Model (Tested per JESD22-C101D) . . . . . . . . . . . 225V
Latch Up (Tested per JESD78B, Class II, Level A) . . . . . . . . . . . . . . . 100mA
Thermal Information
Thermal Resistance (Typical)
θJA (°C/W)
16 Ld TQFN Package (Note 4). . . . . . . . . . . . . . . . . . . . .
40.2
Maximum Junction Temperature Range . . . . . . . . . . . . . .-40°C to +150°C
Recommended Junction Temperature Range . . . . . . . . .-40°C to +125°C
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
VINDCD1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5V to 5.5V
VINDCD2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3V to VINDCD1
VINLDO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to VINDCD1
DCD1 and DCD2 Output Current . . . . . . . . . . . . . . . . . . . . 0mA to 1500mA
LDO1 and LDO2 Output Current . . . . . . . . . . . . . . . . . . . . . . 0mA to 300mA
Operating Ambient Temperature . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTE:
4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
Electrical Specifications Unless otherwise noted, typical specifications are measured at the following conditions: TA = +25°C,
VINDCD1 = 3.6V, VINDCD2 = 3.3V. For LDO1 and LDO2, VINLDO = VOLDO + 0.5V to 5.5V with VINLDO always no higher than VINDCD1.
L1 = L2 = 1.5µH, C1 = C4 = C5 = 10µF, C2 = C6 = C7 = 1µF, IOUT = 0A for DCD1, DCD2, LDO1 and LDO2 (see Figure 1 on page 1 for more details).
Boldface limits apply over the operating temperature range, -40°C to +85°C.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN MAX
(Note 5) TYP (Note 5) UNIT
VINDCD1, VINDCD2 Voltage Range
2.5 - 5.5 V
VINDCD1, VINDCD2 Undervoltage
Lockout Threshold
VUVLO
Rising
Falling
-w w w . D a t a S h e e t . c o . k r
1.9
2.2
2.1
2.3
-
V
V
Quiescent Supply Current on VINDCD1
IVIN1
Only DCD1 enabled; no load and no switching
on DCD1
-
40 60 µA
IVIN2
Only DCD1 and LDO1 enabled; no load and no
switching on DCD1
-
60 95 µA
IVIN3
Both DCD1 and DCD2 enabled; no load and no
switching on both DCD1 and DCD2
-
50 75 µA
IVIN4
IVIN5
Only LDO1 and LDO2 enabled
DCD1, DCD2, LDO1 and LDO2 enabled; no load
and no switching on both DCD1 and DCD2
-
-
110 130 µA
135 160 µA
Shutdown Supply Current
ISD VINDCD1 = 5.5V; DCD1, DCD2, LDO1 and LDO2
-
0.15
5
µA
disabled
Thermal Shutdown
- 155 - °C
Thermal Shutdown Hysteresis
- 30 - °C
DCD1 AND DCD2
FB1, FB2 Regulation Voltage
FB1, FB2 Bias Current
Output Voltage Accuracy
VFB
IFB FB = 0.75V
VIN = VO + 0.5V to 5.5V (minimal 2.5V), 1mA
load
0.785
-
-3
0.8
0.001
-
0.815
-
+3
V
µA
%
Line Regulation
Maximum Output Current
VIN = VO + 0.5V to 5.5V (minimal 2.5V)
-
1500
0.1
-
- %/V
- mA
5 FN7931.2
February 24, 2012
Datashe
5 Page 
ISL9307
Typical Operating Conditions (Continued)
1.83
1.82
1.81
1.80
1.79
VIN = 5.5V VIN = 3.6V
VIN = 2.8V
1.78
1.77
1.761
10
100
1000
10000
OUTPUT CURRENT (mA)
FIGURE 15. DCD OUTPUT VOLTAGE vs OUTPUT CURRENT
(VOUT = 1.8V, PFM/PWM)
1.23
1.22
1.21
1.20 VIN = 5.5V
1.19
VIN = 3.6V
VIN = 2.8V
1.18
1.17
1
10 100 1000
OUTPUT CURRENT (mA)
10000
FIGURE 16. DCD OUTPUT VOLTAGE vs OUTPUT CURRENT
(VOUT = 1.2V, PFM/PWM)
70
60
50
40
30 PSRR
20 VIN = 3.6V
10 VOUT = 2.6V
LOAD = 300mA
0
0.1 1
10 100 1000
FREQUENCY (kHz)
FIGURE 17. RIPPLE REJECTION RATIO vs FREQUENCY
58
56 +85°C
54
52
50
48 +25°C
46
-40°C
44 VO = 1.2V
www.DataSheet.co.kr
42 DCD1 = DCD2 = NO SWITCHING, NO LOAD
LDO1 = LDO2 = DISABLED
40
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
FIGURE 18. QUIESCENT CURRENT vs INPUT VOLTAGE
I
11
FN7931.2
February 24, 2012
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ISL9307.PDF ] | |
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