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PDF AN8049SH Data sheet ( Hoja de datos )
| Número de pieza | AN8049SH | |
| Descripción | 1.8-volt 3-channel step-up/ step-down/ and polarity inverting DC-DC converter control IC | |
| Fabricantes | Panasonic Semiconductor | |
| Logotipo |  |
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Voltage Regulators
AN8049SH
1.8-volt 3-channel step-up, step-down, and polarity inverting
DC-DC converter control IC
s Overview
The AN8049SH is a three-channel PWM DC-DC
converter control IC that features low-voltage operation.
This IC can form a power supply that provides two step-
up outputs and one step-down or polarity inverted output
with a minimal number of external components. The
AN8049SH features the ability to operate from a supply
voltage as low as 1.8 V, and thus can be operated from
two dry-batteries.
6.5±0.3
24 13
Unit : mm
(0.50)
0° to 10°
1 12
s Features
• Wide operating supply voltage range: 1.8 V to 14 V
(0.50)
0.50
Seating plane
0.2±0.1
• High-precision reference voltage circuit
— VREF pin voltage: ±1%
— Error amplifier: ±1.5%
SSOP024-P-0300A
• Surface mounting package for miniaturized and thinner power supplies
Package: SSOP-24D
0.5-mm lead pitch
7.8 mm × 6.8 mm × t 1.9 mm
• Supports control over a wide output frequency range: 20 kHz to 1 MHz
• On/off (sequence control) pins provided for each channel for easy sequence control setup
• The negative supply error amplifier supports 0-volt input.
Common-mode input voltage range: − 0.1 V to VCC −1.4 V
This allows the number of external components to be reduced by two resistors.
• Fixed duty factor: 86%
However, the duty can be adjusted to anywhere from 0% to 100% with an external resistor.
• Timer latch short-circuit protection circuit (charge current: 1.1 µA typical)
• Low input voltage malfunction prevention circuit (U.V.L.O.) (operation start voltage: 1.67 V typical)
• Standby function (active-high control input, standby mode current: 1 µA maximum)
• Alternate package versions also available.
Part No.: AN8049FHN
Package: QFN-24
0.5-mm lead pitch
5.4 mm × 4.4 mm × t 0.8 mm
Seating plane
s Applications
• Electronic equipment that requires a power supply system
1
1 page  
Voltage Regulators
AN8049SH
s Electrical Characteristics at VCC = 2.4 V, CREF = 0.1 µF, Ta = 25°C (continued)
Parameter
Symbol
Conditions
Min Typ Max Unit
Output 1 block
Output duty factor 1
High-level output voltage 1
Low-level output voltage 1
Output source current 1
Output sink current 3
Pull-down resistor 1
Output 2 block
Du1 RT = 7.5 kΩ, CT = 680 pF
VOH1 IO = −10 mA, RB = 1 kΩ
VOL1 IO = 10 mA, RB = 1 kΩ
ISO(OUT)1 VO = 0.7 V, RB = 1 kΩ
ISI(OUT)1 VO = 0.7 V, RB = 1 kΩ
RO1
80 86 92 %
VCC −1
0.2
V
V
−34 −29 −24 mA
40 mA
17 27 37 kΩ
Output duty factor 2
High-level output voltage 2
Low-level output voltage 2
Output source current 2
Output sink current 2
Pull-down resistor 2
Output 3 block
Du2 RT = 7.5 kΩ, CT = 680 pF
VOH2 IO = −10 mA, RB = 1 kΩ
VOL2 IO = 10 mA, RB = 1 kΩ
ISO(OUT)2 VO = 0.7 V, RB = 1 kΩ
ISI(OUT)2 VO = 0.7 V, RB = 1 kΩ
RO2
80 86 92 %
VCC −1
0.2
V
V
−34 −29 −24 mA
40 mA
17 27 37 kΩ
Output duty factor 3
Du3
Output saturation voltage
VO(SAT)
Output leakage current
IOLE
Short-circuit protection circuit block
RT = 7.5 kΩ, CT = 680 pF
IO = 40 mA
V13 = 14 V
80 86 92 %
0.5 V
1 µA
Input standby voltage
Input threshold voltage
Input latch voltage
Charge current
On/off control block
VSTBY
VTHPC
VIN
ICHG
VSCP = 0 V
0.1
0.8 0.9 1.0
0.1
−1.43 −1.1 − 0.77
V
V
V
µA
Input threshold voltage
CTL block
VON(TH)
0.6 0.9 1.2 V
Input threshold voltage
Charge current
Whole Device
VTHCTL
ICTL
VCTL = 0 V
1.07 1.26 1.45 V
−1.43 −1.1 − 0.77 µA
Average consumption current
Standby mode current
ICC(OFF) RB = 9.1 kΩ, duty = 50%
ICC(SB)
4.2 5.5 mA
1 µA
5
5 Page 
Voltage Regulators
s Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
21
16
21
1.5 kΩ
1.26 V
AN8049SH
Description
IN−2:
Inverting input to the error amplifier 2.
I/O
I
22
16
21
31 µA
OSC
PWM2
FB2:
Output from the error amplifier 2.
This circuit can provide a source
current of −31 µA or a sink current of
0.5 mA (minimum).
O
1.19 V
0.5 mA
min.
22
23
16
IN−1:
Inverting input to the error amplifier 1.
I
23
1.5 kΩ
1.26 V
24
16
23
31 µA
OSC
PWM1
FB1:
Output from the error amplifier 1.
This circuit can provide a source
current of −31 µA or a sink current of
0.5 mA (minimum).
O
1.19 V
0.5 mA
min.
24
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet AN8049SH.PDF ] | |
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